it isn't safe for kids to eat grass or leaves, and its bad parenting if they do that. Otherwise if you arent using other spray chemicals you should be ok. I tell my customers to wait until dry after a spray and the same thing is on the pesticide signs I even write the time and date and note liquid or dry of application on signs where I know they have dogs or kids. Placing a sign at the time of application takes it out of your responsibility. Its like slipping in a store with a sign stating 'wet floor' over the area of a wet floor.
Landscape management, design, and installation
Horticulturalist with Specialization in Landscape Management
25 years old 7 years in business ownership