Between the mattress and box springs.

Husband?? Why bother him? My drill is just as good as his! LOL

I keep mine behind my serger table against the wall of my sewing room. Works.

good for you

Harry, the magnets got thru the mat material. Jolo

Try sprinkling it with baking soda. Thick. Leave it for a day or two then do the other side. I used 6 big boxes in my brother in law truck as he was a heavy smoker. I inherited the truck and it STANK. I swept it and did it a second time and the smell was almost gone. If it can do cigarette smoke it might help your board.