nontoxic

The splintered fluorine atoms, the researchers report, are safely sequestered by reacting them with potassium hydride in solution to form potassium fluoride, a nontoxic ingredient in toothpaste.

The safest nontoxic material options for kitchen utensil are wood and stainless steel.

Chaves uses mosquito dunks, beige, doughnut-shaped floats that kill mosquito larvae but are nontoxic to other creatures.

UC Riverside scientists have discovered a highly effective, nontoxic, and less expensive way to lure hungry termites to their doom.

Some trees in Big Oak Canyon are being treated with an experimental nontoxic limewash, while others are receiving pesticides.