Needs a little more than shaking - Frankford Arsenal Brass Polish

The product works great, I use it with both ground cobb and nut shells. It does a really great job. The directions say to shake well. Maybe I am just too old to shake well, but at 5 minutes of shaking, it still did not seem dissolved. I used a screw driver to stir it and finally got it mixed. The mixing/shaking is the only reason for a non-five star. Now I know just to get the screw driver out and stir, then shake.