I got a self scooping litterbox . Big mistake. My ten yr old had no problem with it, but my six yr old was frigthened by it .She will not use any litter box now. I have removed carpet she has soiled,blocked closets and rooms off. I have regular litter boxes in the places she choses, only to have her chose a different place . I have had her to the vet and there is no medical reason for this behaviour. I love my cat but last week she chose my husbands gym bag. please help