Our cat is eight, and we adopted her when she was three. She is litter trained, but as soon as we started letting her out she took to toileting outside in our garden (she doesn’t roam) although we kept two trays in the house which she has barely ever used since.
For the last two years we have pretty much been WFH, so she has always had people on hand to let her in and out. Now there are a couple of days a week when she’s on her own all day which she was fine with before, but has now taken to occasionally doing a wee in the bath. I put the tray in there today before work, and could tell she had been in it but she still did a wee in the bath.
Obviously this isn’t the end of the world, but I would rather she used the tray! She always goes out straight after breakfast. We don’t have a cat flap, and she is only out if someone is home (unless eg nice summer day and just popping out for an hour).
Cat flap is not an option - we rent plus there is a utility between kitchen and back door, so we would really need two or to keep the middle door permanently open. I’ve redone both trays with fresh litter in case they were dusty (?) but if anyone has any tips…? She has been a bit skittish since fireworks night (which went on for about a fortnight) so maybe is a bit spooked, although she goes out happily.