Foroomaco 12 Pack Sound Proof Foam Panels - 12.6"x12.6"x2" Grid Style Acoustic Panels for Home Studio Room Acoustic Treatments Sound Insulation Absorbing Acoustic Foam Panels (Pink)

Bought these to reduce reflection of high frequency sound and music. This eliminated the echo in my office for online meetings and recording for work. I bought mine on sale for $20, wouldn't pay more than that. They work but require your own wall mounting. Recommended at $20 for echo cancelling.

They Suck

These foam sound absorbers don't do a great job for my needs. I am trying to quiet down a noisy hvac in a room by my office. Still loud and did not help. For best results these need to be soaked in water for a while and then squeezed thoroughly otherwise they will not expand. I let them sit for a couple days to avoid saturating them but they stayed pretty flat. Water did the trick but unfortunately at the end of the day did not help with my sound issues.

I ordered these for my daughter's bedroom. She's a streamer, and sometimes noise from the living room or dining room makes its way into her bedroom while she's streaming, and she wanted these to install on the wall and door behind her streaming set up. She wanted the pink panels, as her room's color theme is pink, grey, black and white, so these were perfect to maintain her theme, which she said is very important for her steaming audience.We received the panels quickly and in good condition. We followed the instructions to the 'T', see the instructions sheet in the review photos, washing the panels in the washing machine and letting them air dry to fluff back up prior to installation. We washed the panels on the gentle cycle in cold water. About 1/3 of the panels were torn during this step, please see photos. We were both pretty disappointed that the panels were damaged doing a required step in the vendor's instructions. My daughter decided to proceed with using the panels....at least for now.....and laid them out on her bed to air dry. It took several hours (about 4) for the panels to dry out (we live in Las Vegas, so it may take longer in humid regions) and to all fluff back up to the same size.The instructions call for using a spray adhesive. Well, we live in an apartment, and we don't want to damage the walls by spraying adhesive directly to the wall and sticking foam panels on top, so my daughter took several large, cardboard boxes apart until they laid flat, and then we stapled them to the wall (using a staple gun) along the box edges. Once the entire area was covered by the cardboard, then we applied them using the spray adhesive.My daughter said she can tell a significant difference in the level of noise that filters into her room now that the panels have been installed onto her bedroom wall, although she still unhappy about the foam being torn on many of the panels, she's satisfied with the sound reduction the panels offer. In order to avoid tearing, you may want to take them to a commercial laundry mat and use an extra large spin machine to wash them, which may help in preventing tearing of the panels, but I don't know that for sure.