Carpet tile is one of the most floors covering for residential, but every one who use carpet tile must examine when buying carpet tiles is adhesive system. There have two methods, stick carpet panel directly to the floor with glue or adhesive solution, and using non adhesive carpet tile. Many manufacturers have designed new adhesive system such as carpet panel backing, self adhesive carpet tile and adhesive dots. It is better and easier than traditional glue because a user has more freedom to lay or move each carpet tile with no any damage or residual glue on subfloor.

Carpet Tile Adhesive Dots - Extra Flordots by FLOR
A user who apply carpet tile from FLOR can purchase extra adhesive dots. Although FLOR provide enough Flordots including carpet tile box, but sometimes a user may require additional adhesive for border or personal design. Flordots are innovative adhesive that no need glue down to the floor directly but only adhere with the back panel of carpet tiles.
Flor.com  -  Call +1 866.952.4093

50cm X 50cm Legato Touch with Tractionback - Non Adhesive Carpet Tiles
Product specifications page from discountfloor.com gave details of Milliken residential carpet tiles. The prominent of this product is TractionBack; it is no required glue or adhesive while installation process.
Discountfloor.com Call 1-800-964-3381.