Vitamix FoodCycler Replacement Filters capture odors from the food waste processing. Filters last approximately 3 months, depending on  frequency of use and types of materials being recycled. Activated carbon filters eliminate odors, which might otherwise occur during the food recycling process. Experience ease of removal with these mess-free filters. To replace, twist in a clockwise motion. Remove protective white label on filters before using them. FoodCycler Replacement Filters are compatible with FC-50 and FC-30 models. There is no warranty offered on this product.