Your correct. I deal with chemicals in my job and we get fooled thinking biodegradable=healthy environment but it has no real correlation what so ever. Biodegradable solvents can also be artificial or manmade materials that are close in their cell structure to plants and animals so they can be broken down by microorganisms.

In fact, some biodegradable substances/items are toxic to you and the fresh water supply. So be weary of the so-called bio's out there.

Bottom line, if it is truly plant cell matter or animal, then it is safe almost always to consume by you. Watch those labels closely and don't fall for a marketing scheme by manufacturers.

That said...........I use what works best and take precaution to not saturate a water supply.

Even some of the most dangerous chemicals in the world can be neutralized by that simple formula and all necessity thing of H2O!