It's in poo bags!
I've just cut some of the grass for the first time, and have picked up 3 lots of cat shit from an area of lawn about 30' x 15'. I know it's from next door's cat, one lot was in the spot where I saw the beast squatting for a leisurely dump this morning, and the other 2 lots are identical in size, shape and consistency, plus their cat is the only one that dares to linger in my garden.
And we never speak, so it's not as though I'd be damaging our relationship, because we don't have one. Mr NDN has never spoken a civil work to me in the 30 years I've lived here.