Living in a tiny urban apartment, this is a problem I am interested in a solution for. However, I always read that such solutions might block the noise for the toilet-user, but not for those outside of the toilet. I'm curious as to the efficacy of a white noise machine versus this device and, specifically, if either is really effective. It's an interesting solution, OP, an I commend you for your efforts - but I fear $150 is going to be a difficult sell.
