We have a similar solution to the 'did you feed the dog (yet)?' question (twice a day). In the morning after feeding we put the scoop next to the food dish, in the evening after feeding we put it back in the bag. That way either of us can easily tell whether it was done yet, without needing to ask. Works like a charm - the dog used to be able to trick us into feeding him twice but we no longer fall for his puppy-eyed shenanigans. :P