SPILLKILL - non-toxic, non-biodegradable absorbent, made from rice hull (husk) SPILLKILL is a non-toxic, non-biodegradable absorbent, made from rice hull (husk). It is environmentally safe to use in containing and cleaning up all kinds of liquid spills. SPILLKILL is also very effective in stabilizing liquid hazardous waste. SPILLKILL is consistently 5-15 times more absorbent than sand, earth and clay. Spillkill.com~Site InfoWhoisTrace RouteRBL Check