The vaporized droplets get into the spaces that you can't get into. Just activate it, leave the room and let it do the hard work for you. Leave the space sealed for at least thirty minutes to an hour and when you return it will be sanitized and smelling fresh. It contains third-generation QUATS (DDAC) which is active in killing 99.9% of viruses, bacteria, and mold. ViroFog lasts up to one week before a reapplication is required. For high-risk areas such as medical facilities and waiting rooms, daily application is required. Manufactured to international standards in an ISO 9001:2015 accredited facility. GlueDevil ViroFog can be used anywhere, such as; Home and work office spaces Public waiting rooms/reception areas Cars, buses, trains, caravans, and containers Restaurants and kitchens Easy to use fog aerosol system. Making your environment safe