TriggerFoam Pro Cleaner removes uncured polyurethane foam sealant from inside and outside of application tools. May also be used to remove uncured foam from hands, clothing and unintended surfaces. Always test on an inconspicuous area to be sure that the cleaner will not damage the finish. Contents are extremely flammable. Do not smoke while using. Keep away from flames, pilot lights, hot surfaces such as light bulbs and objects that may create sparks, such as electric motors, fans, etc.