Do you need to break-up with fleas? The old ‘it’s not you, it’s me’ line just isn’t working? You need Activyl! It will do all the dirty work for you and send those pesky fleas on their way. Activyl is a new spot-on flea treatment that works through bioactivation. A fancy word that means it only switches on inside the flea, to deliver full flea-killing power. Clever! Product details Spot on treatment suitable for small dogs weighing 6.6kg-10kg, from 8 weeks of age kills eggs and larvae in the environment and prevents reinfestation helps in the management of pets that develop itchy skin (flea allergy dermatitis or FAD) due to flea bites protects your dog for up to 4 weeks.