Anyone who has used a can of expanding foam can tell you how awkward it is to direct accurately, and @shelbmess24 does seem to struggle. Commenters also suggest that water would simply run under ...

Key Specs. Size: 12 canisters containing 30 ounces each Color: Orange Coverage: 3 inches Combining an impressive expanding capacity—3 inches—with a dozen cans of foam, this Great Stuff Pro kit ...

Making foam out of algae instead of petroleum is just a better way.” Checkerspot’s biobased foam core has approximately 42% bio-carbon content, and uses a unique oil derived from microalgae.

A plant-based foam mixed with hot water has worked as well as glyphosate weedkiller at removing weeds from olive groves and has also been used successfully in urban areas. By Alice Klein.