We have 9 cats in the house and three bathrooms. Each bathroom has 2 litter boxes, one covered and one not. We keep a covered plastic container with each set (one that the litter came in) which we line with plastic "tall kitchen" garbage bags. We scoop am and pm and take out the bags when they get full (or as full as is easy to carry.) Been doing this for many years and seems to take minimum time and works fine.