I have no idea how to stop this as my cat does it too, however to keep from choking her I came up with a sort of solution, I use a trifolded paper towel and 2 or 3 cheap maxi pads and tape them to the paper towel, it's usually heavy enough to hug the bottom of the vent while still allowing air...
I have an elderly blind female that does this, the only solution I have come up with besides cleaning out boxes continuously and there are 3 other cats in household, and no UTI, it's behavioral , I take a paper towel and use maxi pads (yes feminine maxi pads) with the sticky side taped to the...
