http://walthamstow.london/News/dog-flea-and-tick-control/ PetLock™ Plus is a special treatment and preventative solution for pets, that is formulated to kill chewing lice, fleas and ticks on dogs. It is easy-to-use, fast-acting, waterproof, monthly spot-on solution, which is specially formulated to control and prevent their problems. Sat, 27 Aug 2016 07:43:12 UTC en