I have food periodically delivered from Chewy, and I keep the box. Each month, the old box is recycled and the new box is put to use: https://i.imgur.com/lFgp63O.jpeg
There is definitely an attraction aspect related the "freshness" of the box, as there are squabbles over which cat gets to use the new box. These squabbles wane over time, until the new box arrives.
There is definitely an attraction aspect related the "freshness" of the box, as there are squabbles over which cat gets to use the new box. These squabbles wane over time, until the new box arrives.