What the exterminator said we have to do before he comes again:

[conuly]

Wash laundry, esp. the bedding in HOT water with a HOT dryer. Can do this as he's here.

Strip beds, vacuum mattresses, spray mattresses with 409, remove them from the frame so he can easily treat them.

Clear the shelves.

Vacuum the house, especially the baseboards.

Wash the surfaces, he says with 409.