"Lawn pesticides" refers to chemicals or substances used to treat or control pests, weeds, or insects that may damage or affect the health of a lawn or garden. Full definition
Scientists found that dogs with malignant lymphoma were 70 percent more likely to live in a home where professionally applied lawn pesticides had been used. (caninecancer.com)
The only caveat to this is that many commercial lawn pesticides can cause harm to your dogs and cats if ingested with the grass. (web-dvm.net)
An early study showed dogs getting malignant lymphoma in far higher incidence than expected when their owners used lawn pesticides. (dogsnaturallymagazine.com)