Bests & Worsts Reviews from Amazon

These are decent panels. They're manufactured well. They won't correct standing bass (you'll need bass traps for that) but for high frequency reflections, they do the job effectively. When it came time to affix these to the walls, I poured over YouTube videos and discussion threads. I needed to avoid damage to my rented walls. I was primarily concerned with how to get whatever adhesive I used to stay fastened to the porous foam. The goal was to use Command Strips to fasten to the wall and use some other adhesive to create a bonding surface on the foam to attach the Command Strips to. I tried tacky glue (fail: never dries), super glue (fail: eats the foam without creating a bond) and duct tape (fail: sticks at first, then peels off easily after 5 minutes). The final solution was much easier than expected: just use Command Strips. They work perfectly on their own. First attach 2 strips to the upper corners of a foam square, pressing them into the foam as firmly as you can for about 10 seconds. This creates a PERMANENT bond between the strips and the foam. This bond is so secure that attempting to remove the strip will cause a perfectly strip-sized portion of the foam to come off. Then simply press the foam squares to the wall. Done. Works perfectly. The foam stays attached and finishing the job is QUICK. Excellent value for budget acoustic treatment.