Sent by ErinEditor: Full disclosure: Our drains are relatively healthy, so we don't have first hand knowledge of a safe, effective alternative to Draino. (Although, if we remember our one experience with Draino correctly, it didn't work all that effectively either.)
With nothing much to go on, we did what most people would do: w googled "environmentally friendly alternative to Draino." And what came up first? This AT:NY post from 2004.
There are a few suggestion in the post, but we're curious if any readers have found a good green Draino alternative.
Image via Master Tech Plumbing