The Second Nature Dog Litter System is an easy, clean, convenient alternative for busy dog owners. 3 years of testing and development have gone into the creation of Second Nature to ensure it's effectiveness. Made from natural, non-toxic and super absorbent recycled paper, it is dust free and non-tracking. Refillable pans are available in assorted sizes for dogs up to 35 lbs. The "Toy" size is for dogs up to 6 lbs and the pan measures 20"L x 15"W x 5"H; the "Miniature" pan is for dogs 6-15 lbs and the pan measures 24"L x 20"W x 5"H; the "Standard" pan is for dogs 16-35 lbs and the pan measures 28"L x 22"W x 9"H. Please note: litter pans and litter must be purchased separately. A training guide is included with each bag of litter. 
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