Saw a video to the contrary, few months back (+Raccoon ploy)
Showed a travelogue of these guys walking a regular nightly route through urban areas + their destructive efforts to get into garages, houses via eaves
--if adjacent to an accessible, climbable object.
As to feral feeders, there's this:
http://thewildones.net/raccoons.htm
Raccoons can't jump
These photos were collected using a remote, motion triggered, 35mm camera. The setting is an acclimation cage that had been "opened" to allow the cats enter and exit at will. This is a sanctuary on protected property. We noticed we were going thru a lot of food and that the water was so dirty, we suspected we were feeding other woodland critters.
I set up a camera and here are the results. My cats taught me the obvious: that any surface with food can be reached by jumping. Raccoons, on the other hand, can't jump, as they carry all their fat in their rear end. They can climb any surface where they can get a hand hold. Knowing these two facts, I built the feeder pictured.
All you need to do is provide a feeding platform that they raccoons can't climb up onto, and a jumping level for the cats.
Caveat: We tried a variant on this, a weather shelter on a pole, with the "jumping off" launch pad, etc.
More elaborate, with sleeping compartments as well as food supplies, protected from rain and wind
This was for some ferals--virtual-pets by now: friend had been feeding a tribe for >10 yrs--who had to be moved. Were being silently trapped and sent to a kill-grade shelter by a local vulture capitalist/mobile home 'park' owner, for sheer spitefulness
(tmi to elaborate re the mindset of a mofo who was also trying to rip off the local blue-hairs in a bogus 'buy your lot' scam.)
Alas, the 3 here just wouldn't "jump up" for food! (yet I have seen 2 of them scoot up a walnut tree, as if a tyke.)
Had already been spoiled, I guess, via being fed/held in a large cage for many months as we plotted their 'escape' into freedom.
But Not to walk back whence they came!
Probably they're in better physical shape than a lot of 10+ yo. domestic cats. Oh well..
No reason to doubt this method can work, except ... where there are elderly or infirm who really can't make the jump :-/
And worth a try, in any event--just to confound these barrel-butted big rats. As in Heh.. Heh.. PISS OFF.