To be honest, I bought this book to make sure I would actually study for the GRE. I made sure to get the one with the DVD because I thought it would be loaded with practice tests--it's not. The DVD is sort of a rehash of what's in the book, with PR employees trying to be a bit too personable.

Sprayed this stuff on mold that was growing in my crawl space after I had deployed a Mold Fogger Bomb, and the mold literally fell off where I had sprayed. I have had a musty odor in that crawl space for over 20 years, and after using this stuff, as well as the mold fogger, both the mold and the musty odor are gone. I would not hesitate to purchase this product again, if I'm ever confronted with the same problem again. I'm not an expert on mold by any means, all I know, is that I'm very satisfied with the results that I got from using this stuff.