May I stress that I AM NOT BEING UNREASONABLE .... mumsnet format has changed on my phone, and I can't get the old one back or use this new one, so I gave up trying to find my way around and posted in AIBU.
Anyway... what is this I have just found in my gas Meter cupboard in my front room... they look like some kind of seeds to me...but I'm worried they are old dried up mouse poos! ðŸ˜