CETCO Crumbles are used to: • Prevent or stop extreme fluid loss in porous geology consisting of coarse to fine grained sand lenses. Designed to seal or blind off porous theft zones within the formations. • When manually pushed into the formation with the drilling tool where they immediately swell, CETCO Crumbles mix with surrounding soils and begin to seal the formations. Packaging: 50 lb bag/48 per pallet MSDS Sheets available upon request!