Threw a 10 year old mattress on a dusty plywood floor, and worked on the house any chance I got.

First I got a box spring cover which you'll want to leave on and unopened for over a year, then I sprayed the earth all over, along baseboards, under furniture custions, under the mattress, on the mattress, everywhere.

Just replaced a king bed and frame crushed by guests (yeah, crushed a mattress - how did they even do that?).