Bug Bam! Mosquito Pet Tags use the same award winning formula that has been scientifically tested and proven to repel flying, biting insects. Just snap one over your dogs collar and ‘voila’! No more nasty bugs bothering your dog. Our Tags are made of 100% natural active ingredients impregnated into a flexible, durable, GRAS material, safe for your pet. • Waterproof, sweatproof, and drool-proof too! A set of 2 x tags per pack provide for up to 30-days of protection (15 x days per tag). When the pet tags are not required, just use the vapor-proof re-sealable pack to store them for later. TOTAL USE TIME = up to 30 DAYS! No Liquids. No Mess. No toxic chemicals. No Worries! Smells Like…the outdoors! Measures: 600mm (2.25 inches) wide x 40mm (1.6 inches) high x 4mm (.16 inches) thick. Bug Bam Products LLC warrants that this product qualifies for exemption from EPA registration under the Federal Insecticide, Fungicide and Rodenticide Act.