Surfing around, I came across Homax Waste Away paint hardener. The product is used to harden the remaining paint in a can so that it can be disposed of in the garbage. Most trash collection specifically does not allow you to throw out liquid paint, so this makes the garbage man happy.
It says it works with latex and acrylic paints and stains, but it does not work with oil-based paint, which is a major drawback in our opinion. Of course I’ve always just hoarded our paint so that 10 years later the dried-out can is found at the bottom of a pile of crap in the carport, but I can see how it would be useful for someone who doesn’t have the luxury of storing useless items. It does say that it’s handy for cleaning up spills although if it’s only for water-based paint we’ve found that water works mighty well for that…
Homax paint hardener is available on Amazon, at Lowe’s, and the lowest price we found was at The Hardware City.
So is a product like this useful? Are there cheaper ways of disposing of paint besides the already-mentioned hoarding option? Let us know what you think in comments.