I'm not sure what do you have at home? You could use:
~ poultry dust (Tractor Supply, or Southern States or any feed store)
~ Sevin dust (Home Depot or Lowes)
~ Zodiac lice / flea spray (found at PetSmart, or some Tractor Supply stores or Walmarts have them)
~ Rid (the human lice shampoo) - can be found at almost any market, so if it's late where you are you could find it probably at a Food Lion or market that is open later.
I would also give them a bit of the goat drench as a boost. You can google the homemade mixture which can be created at home.
I would definitely bring them in and give them a warm bath with the Rid probably to instantly kill them if they are ALL OVER, but don't put them back outside, you may need to keep them in the house for the night until they are completely dry. Don't risk chilling them. It's easier to cool down a warm kid than it is to bring up their temperature. I'd be worried that it would cause anemia quickly.
I hope they pull through!