What's that? You've been cleaning malmstones? Why, thank you! With all the chores that need doing around here, I was afraid they would be left to get even filthier. It's not just that they're an eyesore, by the way─in that state, the creatures around here are wont to lay their eggs on them.
As to why...well, I can only assume their preferred nesting trees are in short supply these days. Be that as it may, we can't have monsters hatching from roadside signs. These paths are dangerous enough as it is.
Hmmm, perhaps a sprinkling of stingbrew would keep the beasts away...