I have two bins (my basement used to be a flat) and I’ve never used both and I’ve put a makeshift lock on one but you can still open the lid a tiny amount.
It was empty and I’ve put it far back on the property. Went to move it today and found bags of dog poo in it. It’s not anywhere near the pavement! So someone has snooped around and repeatedly put their dog poo in it.
I had one weird lady (we have houses with the same layout) kept coming over to ask to look around my house as I’d changed the standard layout when I renovated it. Fine the first couple of times but by the third time it was just odd.