That's a really good idea actually as there are so many strays! If I mention dogs have been crapping on my lawn they might get the hint, oooh good thinking Batman, thank you!
I actually have the Dog Warden numbers (normal and out of hours) stored in my phone with the amount of on the loose dogs I see around here! It's not safe for the dog (busy main roads nearby) and I especially worry about young children and other animals out as you never know. The last time I rang (after about 30 minutes on hold!) they said they wouldn't come out unless the dog was secured!!! Pointless and dangerous, especially after a nasty incident in my local park where a lady was attacked by a dog off lead. I don't dare get close to them, have had to wait to get to my front door before now with one on my lawn once, you just never know.