OMS Odorless Mineral Spirits OMS is a high quality grade odorless mineral spirits for the dilution of Dry Cleaning Concentrate into ready-to-use solutions of Upholstery Solution or Drapery Solution. Advantages and Usages Low surface tension; superior penetration. Non-chlorinated. For use to dilute Kleenrite Dry Cleaning Concentrate. It is not recommended to substitute with other mineral spirits. User safe. Customer Information Leaves no residue after dry. Very low odor. Nontoxic. Biodegradable.