LitterMaid Odor Absorbing Litter Box Carbon Filters, 12 Pack Package of 12 disposable LMF200 carbon filters Designed for use with LitterMaid waste receptacles Reduces odor by 50 percent Individually wrapped for preservation Package of 12, disposable, LMF200 carbon filters Designed for use with Littermaid waste receptacles Reduces odor by 50%; easy adhesive application Individually-wrapped to maintain absorbing ability Each filter measures 2-1/4 by 2-1/4 inches