easy way to get rid of them is to wear long pants, put a bag around your shoe and then put a rubber band around the opening of the bag and your leg, then get gloves and a long sleeve shirt and another rubber band. then find some way to protect your head (i have a gasmask so that's my way) then you grab a stick and..... keep hitting it till it is gone ^^
or you can just go to the store and buy some long range wasp killing spray (the ones that shoot 20ft) but what is the fun in that? ^^