Well...we have a lot of squirrels and birds and such from the park, but our cats tend to keep them at bay, especially our big fat peach colored cat, Pinkey. Problem is, the cats also think the garden is a giant litter box! Nice fresh dirt to dig into and do their business isn't exactly something they can resist very easily. So we usually have to shew them out. Our major problem though is the weeds. But usually we get some pretty good veggies out of it.
Perhaps you should try growing some sunflowers. Maybe the rodents would go for the seeds in those instead of the pumpkin seeds, and try looking for some deterrents for the pesky rodents.
This probably seems crazy, crazy, a graveyard theory,
A ghost tried to approach me and got leery.
Ask him a question and he vanished in a second...
~ From a Ghost's Pumpkin Soup (Pumpkin Hill zone theme Song from Sonic Adventure 2) ~