Purrforma Easy-Tie Wastebags (4 pack) by Petmate

These white bags line a receptacle in the Petmate Purrforma automatic litter box. There are four to a pack. These usually sell for $1.99 and up.
They are faiirly unusual in that they have a special fold to go over the receptacle lid. They are about 20" along the length of the receptacle, and about 15' wide including the fold. Petmate has decided to discontinue this, making the litterbox useless if these cannot be found.I am hoping someone may have a stash of these and can sell them to me.