Had trouble flicking the bugs away, similar to what the other commenters said.
The game is technically beatable, but you really have to flick the bugs the moment they enter the screen, otherwise they will be impossible to get rid of once they converge/remain at the center of the screen (where they will keep multiplying due to crumbs often spawning there).
A larger and much stronger "flick" would probably make the game more playable, akin to Fruit Ninja, but the visuals and music provide a nice "pocket arcade" touch to the overall gameplay.