Sure, let them do all of the icky stuff and you will only need to finish up when you get home.
We had the strangest day here yesterday I have ever seen. It was very dark all day and we had 4 straight hours of lightening and thunder that shook the house almost like a 3 earthquake. But very little rain. Not even enough to get my driveway wet. I have seen thunder and lightening like that before, but not for 4 straight hours.
Ron