Though they are innocent-looking fluffy little critters, squirrels can actually destroy your garden by digging up the bulbs and feeding on the buds. Here are some recipes for preparing homemade squirrel repellents.
Irish Spring and a cheese grater. Apparently squirrels hate the smell of the soap, so they'll stay out of your garden. as well as deer and mice. Rather than grate it, I cut chunks of Irish Spring soap.