hmm its a stupid idea, however my cat carrier and litter tray (i use a covered one) look very very similar (colours ect) the size is slightly different and obviously the tray has a flap not a gate.
My two have always used this tray even after vets trips ect and even though they dislike the carrier, but it is completley inappropriate to combine the two!! i mean carriers are typically used for vets trips.... ie after an op ect, arent litter trays COVERED in bacteria?
Im annoyed someone made a quick buck from such a stupid idea