I remember (watching the show in reruns as a kid) the robot as the B-9 Environmental Control Robot. On his packaging (a box or a metal cabinet, I think) you can see the name G.U.N.T.E.R., which is an acronym for General Utility Non-Theorizing Environmental Robot.
It should be your mantra whenever you apply products to the lawn. This doesn't have to be a lengthy ban. The Dog Owner's Guide suggests keeping pets off treated grass for 24 hours, as nitrogen can burn the pads of a dog's foot. The guide also recommends keeping pets indoors during application to prevent an airborne inhalation or skin contact.
Apply 7 to 10 days after sprigging for the postemergence control of seedling broadleaf and grass weeds. Reduced. control will occur if weeds are taller than 1.0 inch, or if weed seed germination occurs 10 or more days after. application. Do not graze lactating dairy animals within 7 days of application. There is no grazing restriction after. an application and non-lactating animals. Do not graze meat animals in treated areas within 30 days of slaughter. Do not cut for hay within 37 days of treatment.