Specially designed for Catit Design SmartSift, these replacement liners make managing your cat's litter very convenient. Easy to install, the liners are designed to fit perfectly in the waste bin. They are very effective at preventing waste clumps from sticking to the waste bin's surface, making cleanups so much easier. When the liner is full, simply remove and discard it. They can hold up to 2 weeks worth of waste. Specially designed for Catit SmartSift cat pan waste bins For easy and convenient waste management Prevents waste clumps from sticking to the waste bin Durable liner can hold 2-week waste load Unscented 12 liners per pack