I don’t really review stuff like clog removers, but this product deserves some attention. I have a sink that regularly clogs. I’ve purchased and used almost a dozen varieties of clog remover, including all the Drano brands on the shelf. Dual-Force Foamer is the only one that truly unclogs my sink. None of the other Drano brands are as effective or are just plain ineffective.
Some caveats need to be addressed. The specific sink I unclogged is the bathroom sink in my bedroom. The only things going on this drain are soap, toothpaste and mouthwash. In other words, if you are in a similar situation, you need to buy this specific brand of Drano and avoid every other variety under the Drano brand.