I have little monsters in my potting shed.

They only come out at night, and they cause utter mayhem.

Due to space considerations, I sometimes keep some of my houseplants in
there; specifically Aloe and Spider plants. The wee monsters seem to
really have it in for the Spider plants. They don't eat them, but what
they do is quite bizarre.

They dig all the earth out of the pot, scatter the earth all over the
shed, then dig up the gravel (drainage) at the bottom, and carry it off
with them - up to the top shelf. We're talking 1cm granite chips, in
some cases.

They also chew through any plastic or Hessian bags, and make little
piles of it in a separate location (still in the shed).

They completely destroyed my entire collection of fertilizers - bone
meal, fish bone and blood, slow release nitrogen, etc. - all of it.

Seems like very unusual behaviour for, say, mice. What would mice do
with granite chips?

So what are these little monsters?

-
[H]omer