I currently have a small kitten size litter box downstairs and a regular size top entry litter box upstairs. Sophie uses the small downstairs litter box- which is great- but I eventually just want her to use the upstairs one. She will climb on top of the top entry box but I've only gotten her to go inside it twice. She doesn't seem to think its a litter box? I purposely go into the room multiple times a day and she will follow me and sit on top of the box. If I look interested in it she will look inside of it. I have no problem giving her all the time she needs but I didn't know if I should do anything now so she doesn't discredit it as a litter box all together. One of the times she went inside it then jumped out and went downstairs and went in her downstairs box! I'm using Dr. Elsey's with Cat Attract in both boxes. I considered taking the top off the litter box temporarily but was afraid it might scare her. I can't tell if its just a matter of time or if I should do something now. Any suggestions?