Where do i place these on bed? i am trying to find out why and where i am getting all of these bites overnight. looks like bed bug bites. help!

These are your detectors. They do not eliminate the problem, but they will confirm your problem. If placed around the room as well as near the head of the bed (By the bedposts) they will first confirm it is bedbugs, then if you use enough of them they will guide you on where to concentrate your treatments. Bedbugs look for Co2 and follow it back to you bed and you. Cut them in half you get twice as many that way. This just one part of your war against this zombie like army of critters. I have been very disappointed recently with pesticides. The best killer is a steamer with high temperature steam. Wash all your bedding in HOT water. Dry at high heat in the dryer for one hour. Completely disassemble your bed and use the steamer on EVERY nook and crack you can find. When out for a meal they are no thicker than a sheet of paper, so hit even the tinniest of cracks. Then steam the carpet and the floor. Get rid of everything (Like clutter items) in the bedroom seal it up in black garbage bags airtight Yes air tight. When it gets nice and hot outside set the bags in the sun. Let them bake for a couple days. You should get things into the 150 degree range to kill all of them. This sounds like its over the top buts its not. Bedbugs are like zombie wack a mole. You kill one and another pops up. Fight a total war. If you loose it costs around $10,000 dollars to throw a blanket over a house and treat the whole house. Even that comes with no guarantee.