Kills fleas on your pet within 24 hours * Kills chewing lice and ticks, including those that may transmit Lyme disease * Provides a full month of protection; remains waterproof for 30 days * Available for over 8-weeks and green color * Measures 5-4/5-inch length by 4-1/3-inch width by 4/5-inch height; available in 6-month supply