As a general rule, I do microwave my AMNPS pellets to dry them. I had an "experience" the other day which I feel necessary to share. My microwave is a 1200W and I use full power for the pellets. This time I microwaved them for 3 minutes. When I took the pellets out of the microwave some were actually charred and smoking. Fortunately I was able to sort out the smoldering ones and put them at the hole end of the the AMNPS, but I wanted to share this as a caution for y'all. Supervise your microwave! The TBS that this "experience" produced has permeated the microwave (temporarily, I hope) and adds a bit of "seasoning" to whatever is heated there.
On a serious note, I can envision some of the smoldering pellets actually flashing over to flame so I wanted to warn everyone that this could be possible.