This book acts as an easy-to-understand guide to internal parasites in horses and the intelligent use of worming treatments to control them. It includes: common types of parasite (roundworms, redworms, lungworms, tapeworms, bots, etc.), their lifecycles and the effects of infestation; how to tell if your horse or pony has worms; worming programmes and various treatments; golden rules for worming; how to administer wormers; and, practical tips on worm prevention.