When it comes to materials used to eliminate pests or parasites, it is important that you understand how much protection they provide. Because this knowledge will help you understand how often the treatment should be repeated to maintain the desired effectiveness. It will also help you gauge how easy or stressful the entire process is likely to be for you. Most parasite repellent sprays only provide protection that lasts 1-2 months at most, if it lasts that long at all. However, this anti-flea collar provides protection for up to eight months! What about long-lasting protection? This basically means you only need to replace the collar once a year. It is a cheaper, more convenient and safer option than using anti-parasitic sprays.