The LitterLocker II Round refills - 3 Pack are designed to fit the LitterLocker II pails only. These refills can last up to 2 months for a single cat household. LitterLocker refills have a multi-layer film that uses Air-Seal technology to seal odours and bacteria within the bag & pail. No more daily trips to the garbage can! PROUDLY MADE IN CANADA. -Fits LitterLocker II Pails only -Lasts up to 2 months -Air-Seal Technology to seal in odours & bacteria -3 pack -Made in Canada