People who don't clean up after their pet's need to understand that someone else's filth might get into your home as well.

A dog owner.
I'm friends with a lot of the local road sweepers. Why because I clean up after my dog.
I don't do it for a badge I do it because I wouldn't want to step in it myself.
In fact since having Bruno I have stepped in some and it's gross.

I have occasionally had to leave the poo simply because it was too loose to pick up.
When he did it in the middle of the road when crossing, cars then started baring down on us.
Or if I ran out of bags because he decided to strain one out to prove a point. (yes he's rude like that)

It's expensive having a dog because you have to constantly replace poo bags etc...
But it's a commitment/responsibility you take on.

I mean the diseases part don't quite agree but it is the responsibility of every dog owner to clean up after their dog's mess.

Love that seen in Billions..... "Pick it up"