We moved house end of last year with our two 10 year old girl cats. Former rescues but have adapted well to a life of love and luxury!
In our previous house they used a cat flap with no issues. In new house we gave them litter boxes which they mostly used successfully although a few poos and wees found elsewhere.
After a month they were let out via a cat flap into new garden. Very quiet area, no signs of any local cats or dogs or anything to worry them. Both used the cat flap and I also left the litter boxes in place for a week whilst they got used to things, and they used both but litter boxes but much less so.
It's cold so they've not been outside much, just sleeping at home where they seem very happy and relaxed. Removed the litter boxes after a week.
Now here's the problem: one of them seems to be hardly going out though has been seen using the cat flap without issue. She is weeing and pooing in the house. Doesn't seem like a continence issue as only usually once a day. We reinstated the litter boxes which are not being used.
What should we do?