There are more flea and tick products available today than ever before. Provided below is a brief description of the various categories of active ingredients found in today's flea and tick preventives.
(Bio Spot Defense Spot On® for Cats)
A pyrethroid, which is a longer-lasting, synthetic relative of natural pyrethrins. Kills and repels ticks, fleas, lice, and mosquitoes. Etofenprox is labeled safe to use on cats.
(Frontline & Frontline Plus)
Blocks the passage of chlorine through cells in the insect’s nervous system, causing paralysis of the insect. Collects in the oil glands of the skin, then is slowly released. Water-resistant. Protects against ticks and adult fleas.
(Advantage II for Cats)
Interferes with the nerve conduction system of insects by blocking the insects’ nerve receptors. It kills fleas but does not have activity against ticks.
(Bio Spot Carpet Spray, Powder)
A plant-derived extract used in environmental flea and tick control. Affects the insect’s nervous system.
(Bio Spot Fogger/
Flea and Tick Shampoo)
A natural plant extract from the chrysanthemum flower. Provides quick flea and tick killing action with a wide margin of safety.
Sodium Lauryl Sulfate:
Detergent-like nontoxic flea and tick control.
Insect Development Inhibitors
Inhibits the production of chitin in flea larvae. Chitin is a component of an insect's outer skeleton and is necessary for the flea to live.
Insect Growth Regulators
(Bio Spot Defense Spot On® for Cats,
Bio Spot Fogger/Powder)
Mimics the natural juvenile hormone in insects that prevents the pupa from molting into an adult, thus breaking the biological cycle. Used in flea control products.