What size cat litter pad do I need?
If your litter box has a pad tray, measure the inside of the tray and pick a pad that fits flat and fills the whole space so it won't bunch or leak. For pads placed on the floor, choose one at least twice as wide as the box and long enough for two or three steps past the exit so that it will catch scatter and overspray. Go bigger for top-entry boxes, enthusiastic kickers, or multi-cat areas so there is extra coverage where your cat lands.
How long can I use one cat litter pad?
If you have disposable pads, plan on them each lasting three to seven days for a single cat or one to three days for multiple cats. But change it sooner if you notice smells, pooling, or damp edges. Replace one right away if there's an accident outside the box or if the pad feels heavy or fully soaked. Seal used pads in a bag before throwing them away. Washable pads might last longer between washings, but follow the same signs to change them sooner if needed.