Hi everybody, I just moved in London, I have three persians that are moving here next week and I'm thinking about the best litter I can have for them. I always had the simple one, with box and clay, but since I have to be out of town at least once a month, I'd need an automatic litter. After a lot of searching and reading, I decided to go for ScoopFree. The trays are very expensive and to have a greener solution too, I'm thinking about having a forever tray but.. This product is made in US, they suggest Fresh Step Litter (it's the best for odour control and crystal dimensions), but it's not sold in UK. Does anyone has some experience to share?