When it comes to materials that are used to eliminate pests or parasites, it is important that you know how much coverage they offer. This is because that knowledge will help you understand how frequently the treatment should be repeated in order to maintain the desired level of efficacy. It will also help you project how easy or stressful the entire process is likely to be for you. Most parasite repellent sprays only offer protection that will at most last 1-2 months, if it even lasts up to that. This anti-flea collar, however, offers protection for up to eight months! How's that for long-lasting protection? This basically means you only need to replace the collar once every year. It's a cheaper, more convenient and safer option than using anti-parasite sprays.