The Parasite Stop Pest Collar protects your pet from parasites for 2 months. It mechanically immobilizes fleas, ticks, mites, lice, and other external parasites. Formulated with dimethicone and without chemical insecticides, dimethicone is gradually released and spreads to the coat and skin. This blocks the joints of the parasitized and renders them immobile. This product is water-resistant, ensuring its effectiveness even after washing. Tie the collar comfortably around your pet's neck and trim off the excess. Replace the collar after 2 months at the latest.