The litter locker just makes this so much easier. Helps to take some of the hassle out of the daily tray cleaning!!! Less trips to the bin, you don't have to use plastic bags to dispose of litter everyday, just when the locker is full. I would advise to use clumping litter which means you just scoop out the part of the litter that the cat has used and put into the locker. The clumping litter is also great because it helps cut down on the scattering of litter on the floor around the tray, after your cat meticulously attempts to cover their business!! Because this litter clumps after use, it makes it easy to scoop out, so you end up using a lot less litter. The locker comes with a cartridge, so the locker is lined in plastic, it's completely sealed so there are no odours! My cat insists on using her litter tray even if she has been out all day! So i'm constantly cleaning the tray, the locker has really helped cut down on the time I spend doing this! It was definitely one of my best buys for my cat!