Indeed, they are.
You can attempt any number of treatments, all of which require dedication, precision , and time.
-Vacuum the fuck out of everything thing including furniture, throw pillows, blankets, etc.
-Launder as many things as you can in HOT HOT HOT water.
-Remove all flowers and plants as they can live in them as well.
-Place sticky traps around to catch and monitor the infestation.
-Deploy insecticide.
You will need a day to do all the above...it is imperative that it is all done at the same time to avoid cross contamination. Yes, it is a pain in the ass, but it can be worth it.
OR
Hire an exterminator. If you need a good one....I can hook you up. PM me if you want contact information