Given the premise, this isn't a bad game. It provides a decent challenge that kept me entertained for five or ten minutes.
Idea: 8/10
A good idea, but it could use an extra obstacle or objectice to spice up the gameplay.
Graphics: 6/10
Good enough, but nothing special.
Controls: 7/10
You have to hold down 2nd while cleaning up the poop. There is no reason to let go of 2nd at any time during the game, so why do you need to hold it at all? It should be automatic.
Challenge: 10/10
No matter how good you are, it is impossible to keep up with the new additions of poop forever. At least you can adjust the difficulty.
Overall: 8/10
I might not keep this game forever, but I will for at least a few months. If you like a challenging and humorous calculator game, this is definitely worth downloading.