Suspend SC - SUSPEND® SC Insecticide with DeltaGard offers the benefits of deltamethrin in a concentrated suspension of pure micro-crystals. The micro-crystals give Suspend SC a long residual &— instead of being absorbed into porous materials, they stay on the surface. As a result, insects continue to contact them long after the insecticide has been applied. Yet Suspend SC leaves no visible residue, has virtually no odor, and won't clog spray equipment.