He should add a Squirrelinator to the mix to see if they can defeat that obstacle.
LOL, no doubt that would get them.
I have a Havahart trap, baited with walnuts (my wife implored me to get rid of them without killing them) so I trapped squirrels like mad as an experiment.
It was like emptying a lake by dipping a bucket into it (which I knew would be the result) but it was fun to try. I got 10 or 15 of them, but I have met my nemesis.
Scarface.
We have a squirrel who has huge scars on his back, about the size of two fifty cent pieces, who won’t take the bait. We have tried peanut butter, pecans, and walnuts to no avail. He seems to understand the trap quite well, and will even go inside to get bait we have put inside before the trigger, but...he will not go over the trigger and spring the trap.
He seems to know.
Before I got wise and wired a plastic dish in the dead center, he had been reaching in and grabbing the bait, even digging under it to get the bait.
I have to admire that damn rodent.
Now, we have a rabbit problem too, and my wife REALLY wants me to get them because they destroy her garden every year, and they simply will not take the bait.
So I got a BB gun to drive them out (I live in a quarter acre lot with anti-gun neighbors around me!) so I have to be discreet, but...I haven’t been able to adjust the scope...it is cheesy!
I’ll try it on low power, and if they don’t refrain after being hit a few times, I’ll pump it up.
However...today, our best defense has been a neighbor’s outdoor cat which we encourage with treats to come over the fence into our yard (”Eva”) rewarded us with a kill, and we saw her this morning gnawing on a severed bunny head!
Sometimes the old methods work the best!