The night that the Snarf (lady of the blue world, The main Lady) returns to the blue world, the cannot attack them. If they do, these monkeys that aren't monkeys will kill them. There are three. And they are also made out of grass.

But normal Scants wont attack Snarfs unless they are Rogue Scants. And those usually wont do it either, unless the Snarf is a Madame Snarf. And she is.