Cleaner for the Sika Boom®-G Dispenser gun Highly active cleaner for the regular cleaning of the Sika Boom®-G Dispenser gun. Sika Boom®-Cleaner is used to clean the Sika® PU foam application equipment after use. This is to remove fresh uncured polyurethane foam residues from the equipment. It can also be used to remove fresh uncured foam from other surfaces. Sika Boom®-Cleaner will also clean and remove grease from contaminated substrates