We are extremely careful with the solutions that we use in our stores and researched extensively before contacting Bactakleen.The Bactakleen team were the only company also willing to do it over new years day. After knowing that their product leaves No residue, Smells good,100% Herbal and most of all Kills this horrible Corona Virus we were more than happy to use the Ultra Mist in our Versace, Longchamp and Paul Smith Stores.