Uncle Gus.

[k0ua]

I've tried some pretty exotic things also. The very best - a couple good 'ol barn cats.

Yes, they work well, but as has been pointed out already, those outside all the time kitty's usually don't last long. Coyotes get 'em around here. Our inside/outside kitty has lasted several years, and he runs his "trap line" around all of the outbuildings nearly every day. We don't have mice around here anymore. He comes in well before dark to avoid the coyotes. So far so good. He is a friendly kitty too.

 

[coobie]

Peppermint oil,fresh cab & moth balls combo work for me.Plus we have 3 barn cats that thin the mice.

 

[dlctcg]

Another +1 on the cats.. we are lucky enough to have 2 that frequent or property almost daily (they are not ours but we truly appreciate them & don't know where they are even from).... try not to use poison because of the dogs & the secondary poisonings (which does happen)... tried peppermint oil, dryer sheets, mothballs all with limited to some results.... Bucket Traps are my FRIEND.... (year round)... Electronic devices have not worked at all for us...

I also have had some luck with Hedge Apples when & if I can get them....

but a good mouser (works for chipmunks too) out does all of the above...

 

[Slowpoke Slim]

The funny thing is the first year we put in the ultrasonic repellers, they worked great. Mice all vanished from the buildings. Second year, we had a few "signs" here and there. Now this year I think they are so used to the "noise" that it's like a dinner bell. I don't know if they just got used to the sound over time, or if somehow the output from the units diminishes over time?