Truth be told, this product isn't designed specifically for bottom of stairs use, but given its height and other perks, we thought it was more fitting for such use. (followmum.com)
Also install gates at the top and bottom of the stairs before your baby gets mobile. (webmd.com)
These types should never be used at the tops or bottoms of stairs because they aren't secure enough to prevent falling. (childproofingtips.com)