Are cats generally clean animals or can they carry lots of diseases?

[melbel]

You only really need a litter tray if they are going to be kept indoors....unlike dogs you don't need to train a cat, they will instinctively find somewhere to dig and cover their business where possible...the only time they make messes is if they are locked in somewhere and can't get to a patch of dirt. They are instinctively very clean animals...another plus...can you tell I love cats!

[NaeNae]

we had a litter tray for our moggy when he is locked in over night. We use to use that recycled paper litter? anyway he stoped using the tray as a poo/pee place and started sleeping in it. I washed it throughly now he uses it as a bed LOL ....

they are dual purpose after a while? (just another reason to get one )