How do I avoid litter being wasted (or falling to the bottom waste bin) and the cat pan being over filled with litter?
The instructions provided with your purchase of SmartSift indicate that the amount of litter in the cat pan should not exceed 5 kg (11lb). There is also a maximum fill line indicated inside the cat pan to help guide you when adding or topping off the litter. In addition, the SmartSift liners have been improved to better fit to the cat pan and allow you to properly see the maximum fill line indicator.
Sifting too quickly can cause clean litter to fall into the bottom waste bin. To begin sifting, release the lever from its locked position and pull forward slowly. For optimal sifting results, the lever must always be pulled slowly so that the clean litter falls into the compartment which holds the litter and only the waste clumps fall into the waste bin below the cat pan.
Once the sifting action is complete, the waste clumps will be deposited in the waste bin and the clean litter will be recycled back into the cat pan. Note: Never sift when the cat is in the litter box!