For a squeak at the nose of the tread, nail the tread into the top of the riser. To make nailing easier, bore a pilot hole slightly smaller than the nail's diameter through the tread. Drive one or more pair of nails about 2 inches apart and at opposing 45-degree angles for maximum holding power.

Step2
Alternatively, use Squeeeeek No More (for carpeted stairs) or Counter Snap (for hardwood stairs) fastening systems. The trim screws in both systems break off just below the surface, leaving only a tiny hole, and Squeeeeek No More screws go right through the carpet without damaging it.

Step3
Fill any holes with color-matched wax-filler sticks or crayons, and buff any wax residue off the face with a dry cloth.

Step4
Put graphite or talcum power into the crack at the rear of the tread to stop squeaks there.