Flies are everywhere in South Africa and pitch up every time we have a braai or try eat outdoors. They get into the potato salad and if left to their own devices will walk all over every bit of uncovered food. They are annoying at best and dangerous at worst. They can infest your home or business and spread disease. Flies mature from egg to adult very quickly and as such can get out of control rapidly. Flies can get into your rubbish bins and if not changed frequently enough an explosion of maggots will soon come crawling out.