This is a means of applying a decontamination agent as small droplets suspended within a gas via the use of an aerosol generator. The ‘fog’ then disperses the active agent (acid, chemical, detergent etc.) within a sealed internal structure such as a glove box or tank. The ‘fog’ condenses on the surfaces removing the loose contamination. In addition any airborne contamination is also captured. Once the ‘fog’ has condensed it then need to removed/washed off and collected.