The main problem is that squirrels don't approach the bait bar from the same low angle that a rat would and when triggered I believe the trap's kill bar just passed under their chin. I tried in various ways to get them to sort of lower their heads as they took the bait but as I said they didn't fall for it. I could have live trapped them with a Havahart type device but relocating animals is illegal here and probably is in fact just a slow way to kill them. I therefore found a fast way to do that and they got wise and just mostly stayed away. That's all I wanted.
I'm sure someone will say they had the opposite experience, but I've found that non-pal airguns lack sufficient power to kill squirrels.
On a budget, I would just use a 22 rimfire and make sure I only fired where there is a safe backstop, such as firing from an elevated position, shooting downwards.
Any trap is more effective if you place it in an appropriately sized rectangular box, that forces the animal to enter from one end and stand perfectly aligned with the killing bar. Google conibear trap boxes to get the idea. Personally, I wouldn't use a rat trap, I would use a conibear style trap. Kills them near instantly without fail if its in a box. I set one up on a path and they try to run through it, even if they don't care about the bait. Fence top is a good place.
I'm sure someone will say they had the opposite experience, but I've found that non-pal airguns lack sufficient power to kill squirrels.




























