Tidy Cat Funnel by trnsfrmr33 on Thingiverse: https://www.***********.com/thing:5450243
Summary:
Here's a funnel we use at home to transfer the bags of cat food into the Tidy Cat HDPE containers for kitty litter. I've found that the cat food keeps longer when it's in a nice sealed container, and you can lug them around / stack them pretty easy. I measured the threads on the container the best I could and matched it to their given presets. and it works!