Join Date: Jan 2013
Location: Toronto, Ontario, Canada
I have 5 cats and 5 litter boxes, which I scoop once in the morning and once at night. My mother, who is home during the day will also scoop if she notices a lot of clumps. The litter boxes get completely emptied of litter and washed about every 2 weeks, though we have one cat that often accidentally pees over the side of the pan, which sometimes necessitates more frequent cleaning of his favoured box. The kitten also takes really stinky poos, so there's only so long you can go without scooping the pans that she uses.
Amusingly, my sister and her fiance have a cat that won't even use her box unless it's been scooped since the last time she went. When she has to go she stands beside the litter box and meows continuously until someone comes and cleans it.