100% Salt & Chloride Free Ice Melt. Safe for People Pets Property and Planet. Safe Paw Pet-Safe Ice Melt is like no other product on the market. It has a patented dual-effect compound made up of a crystalline amide core infused with special glycols. This non-corrosive composition gives Safe Paw a two-way timed-release action. The liquid component starts melting ice instantly while breaking its surface tension. This allows the crystal-core to quickly penetrate and destabilize the ice speeding up the melting process. Safe Paw deicer actually attracts heat to make it even more effective but does not generate heat like salt-based deicers. This ?endothermic? reaction takes advantage of solar effect and provides extra melting power during daylight hours. As an added feature Safe Paw Ice Melt leaves an invisible protective shield that prevents ice from sticking to the surface for up to three days making shoveling much easier. Safe Paw Ice Melt works in extremely low temperatures (as low as -2 ?F).