Dog & Cat Supplies > Dog & Cat Flea Control Bio Spot Flea and Tick Collar with IGR Large Dog Price $8.46 Stock status: Out of Stock Stock status: In Stock Product Code: RJ145-6386 Qty: Description Sizing Information Reviews Bio Spot Flea and Tick Collar with IGR Large Dog, kills fleas, ticks, flea eggs and larvae, and provides continuous protection for up to 5 months for dogs and puppies 12 weeks or older. BioSpot Collar works even after temporary wetting. Contains 10% proxpur and 2.1% s-methoprene. Large size fits up to 25". Made in USA.