Nice game, quite a type to dare making, a bit tough, flies behavior clearly shows they hate dogs very much, tricky as unnatural, there is already plenty of poop to lure them away.
Is there any chance to get also arrow keys soon ? WASD doesn't work very well on everything else than qwerty layout.
Also, on Firefox/windows, the screen is a bit too big so top/bottom are not fully visible (screen res of 1920x1080)