We LOVE our tiles! From the moment we ordered, Felt Right sent us all we needed for an easy installation! After an issue on our end (accidentally used too many adhesive tabs), their customer service came through and helped us fix the issue! In addition to the excellent customer service, the tiles really help us to keep our office space at an appropriate volume. Our neighbors really appreciate them, too, and we have our cart ready for another order! :)
I'm actually using Mosaic to cover the surfaces of a window alcove, to absorb some of the street sound from outside my apartment. I've put all the tiles right next to each other, covering the entire surface. I have more surfaces to cover, so I bought two more packages; besides the sound-absorbing quality, the colors are a decorative addition to my home office!