Anyone use a Solar Pill?? Please advise...

[eSTeC]

I was looking to get a solar cover for my inground 8,000 gal. pool when I was told about a product called Solar Pill. Apparently, this product creates an invisible barrier on the surface of the water which prevents heat from dissipating. This product supposedly works for an entire month. My purpose for a solar cover was just that...to keep the heated water warm.

I purchased the solar pill (about $10) but still haven't used it yet.

Has anyone used this product? Did you like it? Any pros and cons about it?