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.
A: Please do not fertilize for a week prior to our visit, fertilizer will discolor the sealer, turn off automatic lawn sprinklers, do not wash cars or water plants on driveway in the 24 hours prior to seal coating, just be sure that all cars, toys, grill etc. Make sure all pets are secured away from work areas.