I actually do use a Rubbermaid tub. I cut out a larger hole for her to get in the box. I moved the litter away from the front so she has to get inside to be able to feel it. I will take her to the Vet next week and get her checked. She has only wet the floor once in the last two days.
Update...
I have a 11 month old cat that went blind when it was spade.
In the last week she started putting her feet in the litter box and doing her business on the floor. I raised the box 2 inch's higher and she used it for a couple days then started hitting the floor again.
Anyone have any ideas...