Why not? Helping out our little furry friends is a nice thing to do. Feeding squirrels is like feeding the birds, harmless, and even if you stop feeding them they will revert back to being self supporting anyway.
Peanut butter, nuts, grapes, sunflower seeds, it’s all good!
I wouldn’t suggest tying goats to the trees to feed the mountain lions in my area, or dangling cats from the trees to feed the coyotes, but squirrels, birds….have fun!
I “feed” inadvertently a ton of wild turkeys, squirrels, birds, with my geese feed, and, I have a “pet” raccoon that takes bread from my hand and I used to feed a skunk for several years too. As long as you are not over run, have some fun…and, btw….I love the word “rascal”! lol A friend used that word recently and I forgot what a great word it is!