I am partially sighted and have recently (a few months ago) got my first guide dog. We have a routine where he 'spends' (i.e. poos) at home before we go out. He needs to go twice in the morning.
Occasionally he's not ready to do his second one before we set off on the school run, or occasionally needs to do an 'extra' one. It happened quite often when I first got him, but as we've settled into the routine it's only occasional - it happened last week, but hadn't happened for over a month before that.
Anyway, when that happens, I bag up the poo and leave it out of the way, up against the wall, to collect on my way home. There are no bins on the way to school (residential streets) and I can't take it into school with me. I always take careful note of where I place it (as my sight's not good enough to just notice it on the way back), and I always collect it on the way back.
On Thursday there was a dog walker coming past when I was bagging up the poo and putting it against the wall. The DC said that he stared at me and said something but they didn't hear exactly what he'd said. I didn't notice him.
On my way back, the poo bag wasn't there. I know it definitely was missing and not just me not seeing it, because DC2 was with me (not well enough to go to school but had to walk with us). I am now a bit worried that the dog walker (or someone else) thought I was just abandoning the bag!
AIBU for bagging and leaving to collect on return? It is always well out of the way tucked in where no-one would accidentally tread on it, and not left for very long.