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How To Keep Rats From Eating My Cables?

An anonymous reader writes "I am curious to know what vermin prevention/eradication methods are used in other locations. I am working at a dealership and we have an exterminator man who puts out glue traps and bait stations, but they still come and eat my cable. The latest was a couple of fiber runs — very expensive. I have threatened my boss with a cat for the server room (my office), going so far as to cruise the local Humane Society's website and eye-balling a nice Ragdoll-Siamese mix. Even if I do feel like dealing with a litter box, cat hair in the equipment and pouncings on my keyboards (and I'm not sure I do), that only covers the server room. We have multiple buildings on the campus which get locked up to prevent theft, but it isn't secure enough to keep out the critters and the latest chew spot was in the ceiling. Any ideas?"

34 of 1,032 comments (clear)

  1. Three options by SatanicPuppy · · Score: 5, Informative

    Rats and mice don't eat cables...They chew the insulation off to make their nests...or if it happens to be in their way. So your best be it to figure out what the hell they're eating, and shut down their food supply. They'll move on shortly thereafter.

    The word "campus" may put paid to that notion, however. Campus implies lots of people, lots of garbage, and lots of space. God help you if it's a college campus, the promised land of vermin the world over, where bulldog sized rats subsist on half a cheeseburger out of the dumpster. If that's the case, then there is no way you'll be able to shut off their food.

    Introducing predators isn't necessarily a bad idea, but its a measure that can, in no way, co-exist with traditional methods of poison and trapping. Your predator will likely set off the traps and poison itself on the bioaccumulated toxins in the bodies of its prey. If you do get a cat, better feed it a bunch of activated charcoal with its kibble.

    Which brings us to poison and trapping. It's not that they don't work. They work GREAT. If they're not working, it means you're not using enough. You need to come to the budgetary equilibrium where the amount you spend on extermination makes sense based on the cost of cable replacement.

    So if you can't shut off their food, and you can't stomach the thought of your kitties/ferrets/snakes keeling over dead from poison every month or two, you're going to have to up the extermination.

    --
    ad logicam Claiming a proposition is false because it was presented as the conclusion of a fallacious argument.
    1. Re:Three options by poopdeville · · Score: 5, Informative

      They could also try to secure the installations with expanding urethane foam sealant. This is the stuff the Mythbusters used to "prank a car", and that Mike Rowe used a few weeks ago to seal a mine shaft.

      http://www.homeenvy.com/db/9/49.html

      --
      After all, I am strangely colored.
    2. Re:Three options by Cassini2 · · Score: 5, Insightful

      Rats and mice are also different problems. If you have mice, cats are very effective. Mice will not even approach anywhere they think a cat lives. If you have rats, you will need a larger predator. At least a big cat, that you know will take out rats. Rats are much larger than mice.

      I would consider lining everywhere there are cables with glue traps. That will catch anything that goes near the cables. Unfortunately, it could also be highly annoying. Line everywhere a cable enters or exits a small whole with steal wool. Mice are almost impossible to prevent entering a building, because they can move freely through such small entry points. They also seek out heat.

      Finally, if the problem is rats, then it is much easier to block entry to the buildings. Rats are much larger than mice, so physical protection methods work better against rats. Be prepared to use concrete and steel solutions. Rats and squirrels can chew through wood. My experience is that rats will eat plastic much more readily than mice. Rats are much larger than mice, and are tougher to catch. Mouse traps are ineffective against rats. Consider sheathing your wiring in metal and/or concrete. Quick setting concrete is an easy way to plug oddly shaped holes. Metal conduit can be terminated with liquid tight fittings. Between the two solutions, you should be able to prevent mice and rats from either going through conduit, or going around conduit and exploiting holes in the building walls.

    3. Re:Three options by dfm3 · · Score: 5, Insightful

      Rats and mice don't eat cables...They chew the insulation off to make their nests...or if it happens to be in their way.

      I wish I had a source for this... but I remember reading somewhere that rats are generalist foragers who will try nibbling on just about anything they come across to see if it's edible or not. When they come across a foreign substance (a seed, a fruit, a piece of garbage, a nice shiny cable), they'll try a few bites of it. if it makes them sick, they throw it up and remember not to eat it again- apparently they have very good memory.

      This is what makes poisoning them so difficult, and why rat poisons are designed to have a delayed effect. Plastic, on the other hand, won't necessarily make a rat sick in small quantities (it isn't exactly digestible), and new plastic products often "outgas" just enough to produce odors which rats can pick up on. So, when a rat happens across a foreign object with a funky smell (your newly laid cable), it's inclined to take a few nibbles.

    4. Re:Three options by Shakrai · · Score: 5, Funny

      (Really, my friend bought a car on his American Express while in college...).

      If he waited a few years he could have defaulted on it and gotten a Governmental bailout ;)

      --
      I want peace on earth and goodwill toward man.
      We are the United States Government! We don't do that sort of thing.
    5. Re:Three options by techess · · Score: 5, Informative

      Having had rats as pets, I can attest that rats can chew through concrete. Poison sucks because when they die you've got rotting corpses all over the place. The most important thing to do is get rid of food sources. Once that is done, there are several options. Some police stations are using stray cats to help with the rodent problem. They are using feral cats though so they don't desire human interaction. Throw a feral cat in a building and you may never see it again, just clean up the box and keep food & water out. They also are good at getting up into drop ceilings. Be careful though I've got a cat who is a wire chewer so you may just be adding another cable destroyer to the mix.

      Some people recommend plaster of paris (dry) mixtures because when they eat it, it clogs them up and I guess they don't stink as much when they die. I haven't tried it so I can't say for sure. Mix this with traps in areas that are easy to clean and you've got a start. My personal preference for keeping rats out of my barn/hay is the rat snake. They don't chew on cables and unlike a cat, they hunt out rats nests. A good rat snake(s) will eat most if not all of the litters and that can do more to get rid of your population than anything else.

      --
      Don't anthropomorphize computers. They *hate* that.
    6. Re:Three options by Anonymous Coward · · Score: 5, Informative

      Use STEEL WOOL the rats hate it. That really helped us.

    7. Re:Three options by Lumpy · · Score: 5, Funny

      If they try to get rid of all the rats, then who will sell the cars??

      Oh you mean the furry rodent type... Gotcha!

      --
      Do not look at laser with remaining good eye.
    8. Re:Three options by stonedcat · · Score: 5, Funny

      For someone who has had pet rats you sure are a sadistic bastard when it comes to killing them....

      --
      You can't take the sky from me.
    9. Re:Three options by The_mad_linguist · · Score: 5, Funny

      You notice he used the past tense.

    10. Re:Three options by ptx0 · · Score: 5, Funny

      Canadian Bobcats are only slightly larger (1.25x) the size of a standard tomcat, and will not eat humans.. They do like rats, however.

    11. Re:Three options by Chyeld · · Score: 5, Funny

      Great, now we are going to have Canadian cats stealing, hard working, American cat's jobs.

    12. Re:Three options by iron+spartan · · Score: 5, Insightful

      Instead of highly poisonous, how about something that is just highly unpleasant?

      I live on a farm, and have had good luck getting things to not chew on my cables, or power wires for that matter, by rubbing them with habanero peppers. Poison takes time to work. Habaneros work damn near instantly.

    13. Re:Three options by Eil · · Score: 5, Insightful

      Have to agree with the parent. Cats are not tools to be thrown at a problem. They are intelligent creatures and require regular care and attention. Do not try to own a cat, dog, or other animal if you don't know how to take care of them. The submitter might know his stuff about I.T. but plainly knows nothing of either pests or pets.

      Please submitter: have your company hire or consult someone who knows what they are doing when it comes to pest control. You worry about the computers. I don't know what on earth possessed you ask other I.T. nerds for advice either.

    14. Re:Three options by AsmordeanX · · Score: 5, Informative

      Steel wool works great but isn't advised for long term use. It is flammable and if it gets wet it rusts and makes a nasty mess.

      Copper wool costs more but is just as effective with the benefit that spark won't ignite it and when it gets wet it basically stays the same.

    15. Re:Three options by pyro_peter_911 · · Score: 5, Funny

      Please submitter: have your company hire or consult someone who knows what they are doing when it comes to pest control. You worry about the computers. I don't know what on earth possessed you ask other I.T. nerds for advice either.

      Pshaw. When you have a nerd problem, you need a nerd solution.

      Caesium-137 is radioactive, toxic, and liquid at slightly above room temperature. Warm it up to melt it, then pour it all along your cable paths.

      Better still, Technetium-99 is a gamma emitter. Let's see... Technetium melts at around 4000 degrees F, so wear some gloves when you're pouring it along your cabling. Soon, the gamma radiation will scramble the rat's DNA causing them to grow to a Rodent of Unusual Size at which point the rats will no longer be interested in eating mere cabling.

      You could always buy a Mousetrap which will give you something to do while waiting for the Technetium to melt.

      There are some mousetrap videos that you might also reference.

      Peter

  2. The Simple Option by snowgirl · · Score: 5, Insightful

    Rat Poison.

    Yeah, this is "inhumane" etc, whatever. But that's the only way to reduce the population fast enough to make a difference. Most pest control people want to use poisons, because they know it's the only way that works, but then people insist "omg no! you have to be humane about it!"

    Look people. If you want the pests gone, there's really only one option that works.

    --
    WARNING! This girl exceeds the MAXIMUM SAFE standards established by the FDA for BRATTINESS
  3. Snakes by hodagacz · · Score: 5, Funny

    A couple of Ball pythons in the cable runs, and those rats will be history as will anybody poking around where they're not supposed to...

    1. Re:Snakes by Anonymous Coward · · Score: 5, Funny

      Is there any problem Python *can't* solve?

  4. I think it starts with lizards... by PotatoFarmer · · Score: 5, Funny

    Well, you could always introduce some sort of lizards to eat the rats. And then, after the lizard population explodes you could...uh, well, I'm not sure of the exact steps, but I think it all ends up with gorillas freezing to death in the winter. Or something like that.

  5. Use Cat-5 cable by Jeremi · · Score: 5, Funny

    Mice are five times more afraid of it.

    --


    I don't care if it's 90,000 hectares. That lake was not my doing.
  6. Instill Fear by Nyall · · Score: 5, Funny

    Mount their little heads on spikes.

    --
    http://en.wikipedia.org/wiki/Jury_nullification
  7. Boring by Roger+W+Moore · · Score: 5, Funny

    Use high voltage cables and let evolution do the rest.

    1. Re:Boring by bugs2squash · · Score: 5, Funny

      My god - high voltage resistant rats

      --
      Nullius in verba
  8. Go Wireless by EmbeddedJanitor · · Score: 5, Interesting
    Can't eat air!

    One of the great reasons why wireless networking and phone technology is popular in Africa is that the copper thieves can't steal the wires. One area I visited often, many years back, had a 25 mile long telephone cable to a phone that never worked. By the time the installation crew finished the installation the first half of the line would be gone and they'd wait for the next year's budget and start all over again...

    --
    Engineering is the art of compromise.
  9. THe Old Ways Are Often The Best. by senorpoco · · Score: 5, Informative

    .22 air rifle, 3 Beers and 2 cans of Redbull. Make a night of it.

  10. Battle Stations!!! by Anonymous Coward · · Score: 5, Interesting

    Clearly, you need to deploy one or more Rat Zapper Battle Stations

    They work great. Rats die humanely. Things that eat rats, don't.

    I mean to say, things that eat them don't die, not that they die horrible, lingering deaths.

    Well, of course they will die, eventually. But not from this.

    I mean, unless they're other rats.

  11. Pied Piper by roesti · · Score: 5, Funny

    Have you considered dressing up as a minstrel and playing some music? Apparently, that's worked before.

  12. Cats kill rats just fine by EmbeddedJanitor · · Score: 5, Informative
    Our cats kill rats in the barn and house just fine. They started doing this as kittens (4 months old or so). The adult cats will even kill rabbits.

    These are just regular sized cats with no ninja training.

    Rats will happily rip a hole through drywall so don't really care if you block up holes. I blocked up some holes with chew-proof material and the bastards just ripped another hole.

    If you have rats inside, then the chances are that they are an overflow population from somewhere else. We didn't have rats in the house until the population built up in the barn and the "turf wars" pushed some of the rats into the house. As soon as we killed a lot of the rats in the barn they disappeared from the house.

    --
    Engineering is the art of compromise.
    1. Re:Cats kill rats just fine by Dasher42 · · Score: 5, Interesting

      > Barn bred cats are the ninja's of the cat world.

      Absolutely. My grandfather had barnyard cats, and I watched one of them make a habit of stalking squirrels like a pro. She knew that the squirrel would dash for the nearest tree, and would line herself up behind the tree so that the squirrel actually ran *towards* her when startled, allowing for a quick swipe of the paw. Then, she knew how to grab the neck to avoid getting bitten. As spastic and clever as squirrels are, rats are in serious trouble from a feline hunter like that.

  13. Funny rat/cat story by Anonymous Coward · · Score: 5, Funny

    I once saw a rat run into my garage, and I had heard that cat urine would make them leave so I scooped some used clay litter into a bucket and put it into the garage. I went back the next day and THE RAT HAD EATEN THE FUCKING LITTER!

    Rats are real badasses.

  14. Don't use a shotgun - seriously! by buss_error · · Score: 5, Funny

    Had a customer with a motorcycle shop that had a rat problem. His dog (Jack Russel) went nuts one day, and the owner pulled out a sawed off shotgun and promptly put a hole through the wall.

    Exit one rat, four servers, a 440 volt three phase power line, air conditioning condenser, and five twinax runs. Add to damages the vet bill (pellets hit the dog), the doctor bill (pellets hit the owner), and my added expense to replace the servers, bring them from cold to hot, re-running the twin-ax cables, and the $5,000.00 USD (and this was back 15 years or so ago, call it about 8,000 USD today) for, and I quote:

    "Extraordinary charge recovery for work location
    in a free fire zone without body armor or hearing
    protection".

    He paid it.

    The rat? We buried it without honors or marking it's grave.

    --
    Necessity is the plea for every infringement of human freedom. It is the argument of tyrants; it is the creed of slaves.
  15. Re:Three options... Floss of Steel! by davidsyes · · Score: 5, Funny

    I say, set up some tripwires for the rats. Bait them with Ratkensteins, or Frankenrats and treats to eat.

    When they are scurrying about in the dark, on the wire-mesh-gridded floor, one or more of them trigger/s the 25 or so hidden Tesla coils that pop up like Bouncing Betty grenades. Only, these go vertical with wires, and with dart tips, they affix to the ceiling, as zapping and humming set off a cascade of:

    Sqweee-squeee-squee squee, Sqweee-squeee-squee squee (multiplied by how many are getting the charge of their lives)

    And, the problem is solved (nightly) with a

    ratta-tat-tat.

    Of course, mind your voltage, amperage, and other effects, or you'll have body parts stuck on the walls, racks, chairs, and lights. Talk about turning IT/server room into a chamber of horrors.

    --
    Previously: "Linux... Toward the Sunrise..." Now: "Linux... Toward the-- No, now, part of Every Sunrise"
  16. Network cables by Skevin · · Score: 5, Funny

    Don't get just one cat. Get more than one. Get several.

    You're right - Cat 1 and Cat 2 will probably do nothing. Most people won't even think they exist. Cat 3 will do most of the work, but won't harrass rats beyond 100 meters. Cat 4 needs motivation - give it a small token, like a ring.

    Cat 5 can be faster than Cat 3, but like Cat 3, speed and response begin to attenuate after 100 meters. They start dropping packets, which should promptly be buried in the litter box. In the event that rodents bite back, you should consider shielding Cat 5.

    Cat 6 is extremely fast with very little latency, but inflexible and difficult to work with. I use them in my fruit pantry, where rats ate "twisted pears"

    --
    "Twice half-assed makes an ass whole." --Solomon K. Chang