For players disgusted by presence of flies on levels, if you press (and hold) keys: F, L, Y in that exact order while playing any level, it will remove all the flies as if they're found already.
NOTE: This will reduce playtime by 50% as half the objects will now already be found.
See here:
https://steamcommunity.com/app/2346140/discussions/0/3878218563605149331/
CHANGELOG
ADDED - FLY command