For several years we tried all the “humane” methods - we put food in rodent proof containers, sealed cracks, etc. Problem is, when the whether got cold the little beasties didn’t care if there was food in the house or not, it was WARM! We got tired of having our stuff destroyed, of finding nests, and so forth. There was the morning I went in the bathroom to take a shower and stepped on a mouse - yes, they had become that accustomed to living with us they no longer ran away as promptly as they should.
We tried snap traps - which usually but did not always work. Sometimes they figured a way to steal the bait. Sometimes it didn’t come down on their head but on a limb, leading to a bleeding, screaming mouse dragging itself and the trap around while we frantically tried to catch it. Also, the little buggers will turn cannibal, apparently.
We tried glue traps but didn’t like the struggling/noise so we had to dispatch any caught. And we still had the problem of partial captures desperately trying to flee with a trap attached to them.
For awhile we had two-three parrots that became mousers which helped, except there was no way they could keep up with the rodent masses. Because we have birds getting a cat is not an option.
Finally, we went to poison. It has been the ONLY thing to really keep this problem under control. On the rare occasion we find a mouse in the open in distress we dispatch it immediately, but for the most part we no longer have nesting, sounds of mouse activity at night, destroyed possessions, mouse shit piles in odd corners, or the rest of it. Sorry about that, mice. I don’t have anything against them, but I refuse to have them in MY nest and, as noted, the problem isn’t so much food as available warmth and shelter in my residence.
On the rare occasion we have caught an animal in the house live and unharmed we have released it unharmed. So far that’s several deermice, a vole, two bats, and a squirrel. We have not yet succeeded in capturing a Mus musculus unharmed.
It’s not like we get our jollies hurting small creatures. It’s not like we didn’t try alternatives. It’s not like we don’t care about secondary poisoing - we do, and we don’t want it to happen, and try to minimize the risk. Poison is really what worked for the mouse problem, though.