Mickey,
You are right: with a garden it's always something. The only thing that seems to grow without too much additional care is garlic. I find I forget to use it. So every summer I dig it up, divide it and replant it. In another decade the whole garden will be full of garlic.
One of the things that has kept me from considering buying your device is that I could find no place on the site that said how it worked. I have a master's degree in engineering and I care about stuff like that.
I don't care very much whether the animals live or die after relocation. I just don't fancy the act of killing them myself. I generally take them to a place where they might find water, with the idea that they have a fair chance of success. But if a rat dies of thirst in a Havahart cage before I can relocate it or afterword, I don't get too broken up about it.
As for the sonic/ultrasonic device - I have proven two things to my own satisfaction:
1) When the neighbor's dog is barking I can turn it to its loudest setting and the barking stops. It would appear that doing this consistently has trained the neighbor's dog not to go on barking for long stretches of time. Not bad considering it is 200 ft away.
2) When a squirrel that I had caught in a Havahart trap heard it, it scared the bejeezus out of him. Had to take pains to clean up the driveway.
So far, as long as it has been running in the garage we've not had rodents there. Maybe it's a coincidence. Who knows?
