Neighborhood cats shit right in the middle of my lawn. It stinks and the robot lawn mover makes it even worse.
I do NOT like cats, and this is not helping.
What works to keep them from shitting on my lawn?
The votes have spoken. Some people are cat lovers; thanks for the great advice from the rest of you! I will not go out of my way to accommodate other people's pets that aren't welcome on my property. My first weapon of choice will be chili because it's simple and cheap. Other ideas have been noted.
Serious answer: I don't think there's much... I used to have a problem with cats pissing on my bicycle (which used to be parked outside) and the only thing that would keep them away was a bike alarm - at the expense of mine and my neighbors' sleep. Covering the bike made no difference, they just pissed on the cover instead. The fix ended up being just parking my bike inside.
If you let the garden get a little bit overgrown, do they still come and drop their shit there?