flush is the leftmost button on top of the remote, to the right side of it is also flush, if you only need small amount of water. To the right of that "little" flush, is even more "eco" flush.. This is why they need standardization.
I used to go out and catch some crickets just for snacks when I was little back in my hometown. I don't think they're that bad. A little much can make you dizzy though (dunno why).