Don't know about lawn service. But last year my dad's yorkie got poisoned by pecticide. What happened is my dad spray the backyard and keep his dog out of it the whole day. However, the next day he let his dog back to potty and his dog decided to munch on a blade of grass. Well, he started to vomit and had to be rush to the vet. It was caught early so he is okay but it was really scary for my parents.
ps: my father doesn't spray the backyard anymore |