Wash the reusable liner with mild dish soap and warm water. For a more thorough cleaning, submerge in diluted dish soap and water for 15 minutes to allow the soap to penetrate the seams. Allow 24 hrs to dry sufficiently.
To remove stubborn odors, use the Modkat Cleaner + Odor Remover.
Add new litter to maintain the recommended 3-4 inch level. This will enable your cats to bury their mess properly while keeping urine from reaching the liner or the bottom of the litter box.
* DO NOT put the liner in dishwasher, dryer or washing machine.