Soundproof Floor Underlayment | Duracoustic S.T.O.P.™ from ASI
Nourison Basic Rug-Loc 5 x 8 Rectangular Recycled Synthetic Fiber Non-Slip Rug Pad in the Rug Pads department at Lowes.com
Amazon.com: Sonic Acoustics Non Slip Soundproof Rug Pad 12x12x0.4inches, (Felt + Rubber) Double Layers Area Carpet Mat Tap, Provides Protection and Cushioning for Hardwood or Tile Floors : Tools & Home Improvement