There's a lady living downstairs (I'll call her M), who appears to be physically and mentally quite unwell. She leaves lots of binbags in the corridor, daily - I'm talking 5 or 6 bags full of rubbish, in a narrow corridor which is right by the entrance to the building. One of the other neighbours tends to take them out for her but they are frequently there for hours, including overnight. The bags contain things that aren't very pleasant, including bandage dressings and food waste.
We have recently had a fire risk assessment done, and these bags were identified as a hazard, because they could impede a quick exit.
We have explained this to M and asked if she could leave the bags inside her flat for the neighbour to collect when he is going out. She has refused to do this because it's not hygienic apparently (although she's clearly not concerned about the hygiene in the common parts). She is continuing to leave them dumped outside her door, in the way of everyone else instead.
She is a very difficult and tbh pretty unpleasant character. I appreciate she is unwell but I don't think mental illness is an excuse for rudeness to the extent that she displays it. We have had other issues with her, including cockroaches in her flat which we had to treat when she was in hospital as she didn't want to allow access in case she picked up germs from them (but cockroaches are fine?!) and Japanese knotweed in her garden. It has been a nightmare dealing with her and there hasn't been a word of thanks.
Does anyone have any suggestions about how to deal with the bin bag issue, or has anyone been in this situation before? We have contacted environmental health, who have said they can't do anything as it's a private matter. She is an owner occupier, so no landlord to contact. We are one of the freeholders as well as a leaseholder.
Thanks in advance!