Salvo flea and tick collar protects dogs against fleas and ticks for up to 6 months. Our improved formulation kills fleas on contact and is effective against three species of ticks, deer ticks, American dog ticks and brown dog ticks. The collar is odorless and long-lasting. Each tin contains two individually packed and sealed collars. Each collar provides continuous protection for up to 6 months, giving you 12 months coverage with each purchase. The Salvo collar is water-resistant and remains effective following a bath, swimming or after exposure to rain or sunlight. The peel away comfort strip provides a smooth surface to minimize irritation and the proprietary triple clasp system ensures collar stays engaged in the most demanding situations.