Re: [Electronics_101] Q about ultra sonic pest repellers
- On 01/08/2011 22:42, Randy wrote:
> FYI they make what is called "ratshot" for .22's. It's like a tiny60 years ago I remember seeing adverts for "garden guns", shotguns that
> shotgun shell, for rats, thus the name.
> It comes out of the barrel with a very W-I-D-E pattern. Friends of mine
> in a mobile home in a very rural area used them *inside* their home,
> didn't mess things up very much.
used similar cartridges, for killing vermin.
- Rug rats.
--- In Electronics_101@yahoogroups.com, Ross McKenzie <valusoft@...> wrote:
> On 4/12/2011 7:47 AM, orvillefpike wrote:
> > You can hook up an ultra-sound transducer to a 555 and vary the frequency to see if there is a particular frequency that annoys the mouse.
> > That's how I did it, with my nephews and nieces,
> ... your nephews and nieces are mice?