Nuisance repellent

Apparently I've started a garden in the domain of rather aggressive bushy-tailed herbivores (Sciurus nuisancis, I believe is the correct Latin name). They are digging remarkably deep holes in my raised bed out front, uprooting radish and sunflower seedlings quite carelessly. I probably should have expected this, but I don't recall squirrels ever being that much of a problem in Oakville. They certainly weren't a problem at Everdale last year, but that was probably because there were no trees near the garden. (The only problem there was Spike the cat using one of the raised beds as his litter box.)

I did some research and found that chili peppers are an effective repellent. So I've been sprinkling cayenne pepper on the edges of the bed, and it definitely works. I have been going through a lot, though, as it has to be reapplied every couple days, especially if it rains. So I stocked up at the bulk store and made a convenient shaker for it. At least cayenne pepper is something I could grow myself if I had to do this self-sufficiently. (Of course, the better solution is to not garden so close to trees and telephone wires in the first place.)