Squirrle removal may be a good option, if you can trap and kill them. Don't use live traps unless you want to drive 30+ miles away to let them go elsewhere. Besides that, it may be illegal. A rodent poison as well as some rat traps can also help. Sure, more will come, but if your watchful, and rebait the traps, you may reduce summer damages. Chicken wire buried above the bulbs will help prevent them from being dug up.

A bb / pellet gun does wonders for tree rats...

Don't think of them as a problem. Think of them as an extension of your edible landscaping.

.....Alan.

Hmmmmm. I wonder what Garlic-Parmesan squirrel tastes like... Good one Alan...

how you are supplementing your protein intake.
Too many people think squirrels are cuties that just walked off a Precious Moments statuette and do not know them for the Darth Rodents they are.

Alright guys, here's the link you've been looking for:
http://recipes.chef2chef.net/recipe-indexa/arc-2187.htm
scroll down past the squid. Old country neighbor would make squirrel pie every month off the ones in her old mulberry tree, she used an Crossman pump pellet gun if she couldn't lure them in close enough.

Here's another one with some good recipes and preparation instructions.

Here is a link that might be useful: Harvesting the Acorns - and the critters that eat them