Hi, So today I caught Oreo today lying down in the upstairs hooded litter box. This was the second time. Danbi did the same thing when I took him upstairs for a while today and yesterday. I changed the upstairs litter from catsan to tigerino canada sensitive last week. Not sure why they want to chill inside there? Weird. The downstairs has been changed from the Asda wood pellets to tigerino canada sensitive just yesterday.