Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great as a base layer

With 6 cats in the house & 2 51 qt. litter boxes, scooping is not an option. 2 of our cats are long hair So a lightweight litter tends to cling to their fur. I put the litter box in a heavy contractor bag, add about 3" of cedarific & top with 10 pounds of clay litter. When it's time to change, I just invert the bag & toss. No need to scrub the litter box. Cedariffic deodorizes & lightens the load. I order 2 of the 50 liter bags & get free shipping.