Hi, I'm new to internal cleansing, and have yet to experience mucoid plaque coming out, but I can tell you my experience with Bentonite clay. I was taking it a few days alone, without psyllium, and was trying to drink alot of water, but got a bit clogged up. I did a salt water flush, and out came a "plug" of what looked like the color of cement. This was the clay, it looked very much like clay that you might sculpt with, it was smooth and grey. From what people say about mucoid plaque, it sounds very different! I wouldn't be wary about the bentonite, just drink tons of water!