Advocate is a monthly spot-on treatment for cats that covers multiple parasites in a single application. The orange packaging identifies the 0–4kg formulation, suited to small cats and kittens. Applied to the back of the neck, it provides protection against fleas, heartworm, gastrointestinal worms, lungworm, and ear mites.

The active ingredients are imidacloprid and moxidectin, which work through two different mechanisms — imidacloprid targets fleas on the skin surface, while moxidectin is absorbed systemically to address internal parasites and heartworm. Monthly application controls existing infestations and prevents new ones. In Australia, lungworm is a genuine risk for cats with outdoor access, and Advocate is one of the few products that covers it alongside the more commonly treated parasites.

Owners choose Advocate when they want broad-spectrum coverage without managing multiple products. The single monthly dose handles what would otherwise require a separate flea treatment, wormer, and heartworm preventative — particularly relevant for cats that spend time outdoors or in multi-pet households where parasite transmission risk is higher.