I've got grey squirrels in my loft, how can I get rid of them?

I've got grey squirrels in my loft, how can I get rid of them? Are there any devices on the market which would deter them? Sonic devices or even traps?|||Call teh Pest control its more effective and safer. If you insist on getting rid of them your self maybe try mouse traps but Good Luck though =) and be careful!|||yeah, a rabbit sized live trap baited with wheat bread stuck down with peanut butter, and get 2-3 different brands of sonic emitter, this creates a cacophony that drives the squirrels out, once they are all gone, use 1/4" heavy chicken wire over all the soffet holes and vents, staplegun from the inside so you dont really see it, and get a cat, the cat pee smell scares squirrels, they also make squirrel away spray, but i find it doesn't work.|||try offering a food supply via feeder in a differant part of your yard. once they have moved to an easly accessable food supply,close off where they are getting in.|||pest control will save you a lot of trouble, headache, time and possiblely attacks from angry squirrels.|||Better than bats in your belfry.