I use the 20qt for my guys, they’re hung in their shed and while removable, I rarely do. In the winter their daily ration is wetted for a hot mash which they find reeeeeeealy exciting and slosh and fling their food with great exuberance. :lol: These buckets keep the food flinging pretty much contained. Its the reason I bought them.
I’ve found mine to be very durable - aside from the little rubber caps, lost them in the first week. When I’m late with breakfast, the boys take out their angst on the buckets, one goes so far to stick his foot in the bucket and then bang on it. :grief: (fortunately the design allows for him to easily slide his foot back out again). Buckets have held up to this abuse for several years now.
The inside of the bucket is rounded, there are no corners for food to get lodged in and my guys easily can lick the entire bucket clean.
I do find them tippy however - for instance if sitting on the ground and pouring something in - the bottom is flat and the corners rounded, and with the unusual shape they take any excuse to roll forward a bit. Like mentioned you have to keep the handle back for a bit of counterweight, but if you’re mindful you can quickly figure the knack for filling without tipping.
Only thing I really hate about the design is that the bottom is completely flat, and again the corners rounded off. There is no ridge or lip like on a regular round bucket, so its near impossible to pick up and pour, there is NOTHING to grip on the bottom. But since mine live hanging on the wall 95% of the time, its a minor issue for me.