This step is important to do before you catch the animal- it is not a good experience for either you or it when you think you have a container big enough, but it isn’t quite…
I’ve never needed bricks- metal cages should sink without any assistance.
I’ve been getting a lot of chipmunk damage on my strawberries. I’ve tried this for the fist time and it seems pretty effective. 2 during the first day and 1 overnight. The nice thing here is that it can catch a bunch without me needing to reset it.
I’m hoping that squirrels can be interested in this as well, but so far it is only chipmunks. I may need to add more water at the bottom to get squirrels- I bet they can jump out if it isn’t too deep. And there is probably only so many times they will try their luck on the peanut butter wheel. Looks like an event out of the American Ninja Warrior TV show.
I don’t use the Kania traps, but I have caught the neighbors cat once in a Have-a-Heart. The trap must have been unpleasant enough (even without a bath) for him that he never went in again…