What it really helps with is being able to use cut up tidbits. This discourages imprints taking possession of larger pieces, which of course, often leads to carrying, aggression, mantling, etc. I usually use a stainless non-tip dog food bowl to do the same, but the carpet is easier to roll up and can help keep tails more pristine. Another option is a small, collapsible step stool, which is even more inconvenient to carry around (easier for longwingers who are never far from their truck), but really helps with manners and feathers.