Buy Broadline Spot-On Solution for Large Cats online at the lowest price with free shipping at Canadapetssupplies.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. Broadline controls flea bite hypersensitivity by flea control and will destroy newly acquired fleas within 8-24 hrs. Additionally, it prevents flea eggs from hatching. 1 application kills ticks and prevents tick infestation for up to 3 weeks.