Q: What is the single biggest mistake when buying furniture and bed risers.

A: The one single biggest mistake people make when buying risers is in selecting the correct riser size.  To prevent this mistake, get on the floor and measure the bottom of the furniture or bed leg with a ruler.  Then buy a risers that fits those legs.  I hope that helps.  Feel free to call Guy at Furniture Risers for free expert advice on this matter at (415) 370-1821.