A bit of background first...I have 4 elderly cats, all one family group who have always used the garden for toileting. Last June I got a female kitten and as soon a she was allowed ( limited, supervised ) access to the garden, she quickly ceased to use the litter tray in favour of soil. The 2 older males both visited the tray and used it, but more in a marking territory way than necessity I feel. A few months later I got a male kitten, and although he sussed out the cat flap within weeks ( cue much cat proofing of garden ) he has steadfastly stuck to using the tray so it has stayed.
Over the cold winter months 2 of the OLD cats have now decided that the tray is a great idea, one because I think she is timid and maybe the kittens careering round the garden upset her toilet habits, the second because he has been unwell, kidney issues and therefore LOTS of urine.
Cleaning kitten pee/poop from a tray is easy, cleaning that same tray after buckets of poorly aimed adult cat wee is another matter!
My question is....has anyone reversed this kind of situation successfully?
Obviously I would like to be able to phase out the tray and get them all to use the garden, and am guessing that come spring once the back door is open all day this will be easy-ish to do with the kitten. I DO NOT want to stress my older cats by forcing the issue as I know this may result in messing in the house, so how can I gently persuade them?
So.....do I have hope? Or am I doomed to a litter strewn bathroom forever?