» I only use the rat poison inside, is a threat to wildlife if I never use them outside?
I only use the rat poison inside, is a threat to wildlife if I never use them outside?

The rodents are poisoned by rat poison inside can go outside to die. The anti-coagulant rodenticides put 2-5 days to kill rodents.
Meanwhile, the rat or mouse that eats the bait several times will truly intoxicated by internal bleeding. The best solution to channel rodents, is to install sticky traps on the passages that look like an entrance or exit of the house, building and storage areas. This will prevent rodents to die anywhere.