On 05/07/2011 16:26, doug metzler wrote:
> I did a little research on this when rats moved in to my crawl space
> and all the tests I found said that while rats are sensitive to
> ultrasonic and may react at first eventually they get used to the
> noise and thus the effectiveness is null.

That's what I would expect. Actually some of the "repellers" on sale=20
here leave out the Ultrasound (no doubt it's expensive) and just claim=20
"electromagnetic". I don't believe that. Esp. since replacing gnawed=20
mains cable when fuses went. No body.

Dogs and Guinea pigs really don't like it, but familiarity and then food=20
wins.

*Rats*
Attempted drowning only works it they are in tunnels. They swim well.

Knocking on head is very difficult. The rats and mice won't wait for the=20
blow,

Poison sometimes works. but how well is hard to say.

A cage type "trapping" thing with choice bird seed and/or Guinea pig=20
food works after birds have been caught and released several times. But=20
they are mighty suspicious. Also then there is a live and cross rat to=20
deal with. "Snappy" traps (wooden, metal or plastic) work ok for mice,=20
but the rats are hardly ever caught. Too suspicious of them I think.

I'm told shooting works (you have to spot them 1st). I've not tried that.

Just because you haven't seen rodents doesn't mean they are not there.
--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.