Plug N’ Dike Pre-Mix is a non-toxic material which forms an immediate seal to control flammable and/or hazardous leaks and spills. The Plug N' Dike Pre-Mix is a combination of a polymer in a bentonite base that produces a seal against penetration of fuels and chemicals. No surface preparation needed. Plug N' Dike Pre-Mix is a plugging material; it does not absorb. Ship wt. 10 lbs.