Someone gave me a few pounds of uncut, unwrapped base they had gotten at a thrift store for .25, it had originally come from walmart and i think its been some years since they have carried m&p bases. The "clear" base had turned a little yellow, and some of the edges were a little gummy, I felt that they were too old, hubby suggested to try melting to see what would happen. I started melting in the microwave and it was hard to melt, but finally melted down with a few chunks that didn't melt and a skin started developing on top of the melted soap in the microwave so i added scent and coloring, poured into a mold. I let my soaping bowl and spatula soak, instead of of the leftover soap softening on the tools so they could be rinsed, the soap hardened , I ended up scapping it out of the glass bowl and throwing that portion in the garbage, I was afraid to put it down the drain, it was rock hard. After finally getting that cleaned, I checked the molds, I ended up breaking one of the molds to get the soap out , By this time, I was throughly disgusted and threw soap, broke mold, unused base out