Those are great tips… why didn’t I think of a hair dryer
But yeah, you HAVE to be persistent… they used to bite me and my then 2 year old daughter and I thought I was going crazy… we explored allergies, changed detergents, went to the doctor… I actually saw one crawling on my daughter’s bed once and that made me realize we had them. It was horrible, I saw welts on my baby’s face… after that I had to hunt them down and kill them all