Buy Broadline Spot-On Solution for Large Cats online at the lowest price with free shipping at Easyvetsupplies.com Broadline spot-on solution for cats 5.5-16.5 lbs is a topical solution that controls both internal and external parasites. It is indicated for the treatment and prevention of flea and tick infestations, biting lice, roundworms, hookworms, and tapeworms in kittens and cats.