Have you considered getting a second tray for her? (Some cats like to have two so that they can use each one for a different function.) Or just taking off the hood altogether? (The hood can sometimes trap smells and they find that unpleasant.)
Hi! We've had our cat for a few years now and not had any problems with litter tray use until now. All if a sudden she is wearing out of the tray all over the floor. Same tray she has always used. Always clean for her - no change in upkeep! My thought was that she is having hyperthyroid treatment and has put in weight so maybe she is just misjudging her size now but maybe it is more of a message to us.
Any ideas? (She always weed at entrance to tray and then turns around to poo at the back . It's a hooded tray but no door as she cannot for the life of her work out flaps and she's 15 now so no point trying!!)