I do not have a lot of experience with euthanizing animals only a few that the vet did, pets. I will say I was really surprised at how fast it was and expected at least some suffering but honestly, it just wasn't there. It was very quick. I was rather relieved. I would much rather see animals euthanized than caged up permanently or dumped out some where to starve. A lot of people around here dump cats and dogs. It is better to put them down than dump them. They are hungry, thirsty, cold, full of fleas and worms and then they either get hit by a car or ate by a predator. Not a good way to live
I think people have good intentions to relocate an animal as a resolve to 'fix' both sides and not kill it. But it is not in the animal's best interest.
I have a lot of squirrels here, and I plant to rake the yard up diligently in the fall as soon as the nuts come off. That will help I hope to detour them from hanging out here. The yard was abandoned for several years and I am sure the squirrels loved that. But by keeping it up now and raking, I hope to slow them down.
There are other links too, just Google -relocating wild animals or something similar.