Frontline Plus is a spot-on flea and tick treatment for dogs, applied monthly to the skin at the back of the neck. The range is dosed by body weight, with colour-coded packs covering small dogs through to extra-large breeds, so the right option depends on your dog's weight rather than their age or breed.

The treatment kills adult fleas on your dog and also targets flea eggs and larvae, which breaks the flea life cycle rather than just knocking down the adults you can see — the main reason re-infestations take hold. It also works against ticks. Application is straightforward: part the coat, empty the pipette onto the skin, done. Packs are sold in multi-application boxes, with three- and six-month supplies available across the weight ranges.

Frontline Plus has been a household name in flea control for decades, and owners keep coming back to it for the simple monthly routine and the egg-and-larvae coverage that shampoo or a flea collar doesn't offer. Weight-matched dosing makes it easy to buy the right strength.