The joys and pains of using a pelletizer

I've been recycling unused filament with the Fredaxe pelletizer for a few months now, and I have had way too much fun with my Filastruder ever since. But, I noticed some effects I didn't care for. So this is just a basic discussion on the pros and cons of recycling filament.

Pros:
*You can recycle unused filament. I almost never use the last couple meters of filament, so this is good
*You can create new colors otherwise unavailable like I did for Olive Drab here
*If you accidentaly picked up or were shipped filament other than what you need, you can grind it back down and re-extrude, where you can then choose to modify the color a bit should you feel the need to.

Cons:
*Color contamination is not fun. At times, during the regrind process, there will be tiny flakes about 1mm in diameter. They like to stick to the inside walls of the barrel and not show up until a few kilograms later. This travel delay is more pronounced when extruding natural filament. As an example....

Both pictures were taken within 24 hours of each other, and I had only been extruding natural at that time. I used about 750g of PA747 to purge, but it was still showing up in the MG94 with colors I hadn't used in over a week while extruding almost every day.
*Properly separating pelletized materials and colors should be kept in mind to ensure consistency. You would hate to be halfway through a sensitive project when you suddenly noticed an imperfection. Because of this, you will want to plan ahead and think about some storage plans.