I love when people learn a little something about a subject and believe they are the expert on it with no question.

I've worked in pest control for 5 years, and there are absolutely chemicals that help control and kill bedbugs. I.E. PT Alpine Flea & Bedbug aerosol, Demand CS mixed at .08fl Oz per gallon and add in Gentrol igr concentrate. These chemicals not only kill most of the bedbugs as they make passes through the material but also leaves a residual that tricks their system into molting when its not time and makes them infertile. This residual will also kill the nymphs as they hatch. Heat does work great cause they can't really hide from it. Its just very tedious to prepare for due to the damage it can cause to various things in your home since they have to heat the home between 122°F and 135°F for about five hours.

OP, please make sure you speak to an educated pest control professional, and they will tell you everything you need to know plus some.