I have a pair, and they _do_ work. Just not 100%. More like 70-80%, and certain kinds of noise are filtered out better than others. So they might not be a panac

I have a pair, and they _do_ work. Just not 100%. More like 70-80%, and certain kinds of noise are filtered out better than others. So they might not be a panacea for the OP's noise problem, but they help more than regular headphones.