I did a search and didn't see a product review on A/C Pro Refrigerant (Black can Wally World) - I just finished using a full can of this product on my A/C and it was super easy to use (FYI) and my Wranglers A/C works like a champ. After taking my jeep to 5 different shops I finally gave up on getting my A/C worked on.
I finally got a break. I was de-greasing my engine and found a huge leak in one of the A/C lines.(sounded like a leaky tire) After replacing that and using a can of A/C pro. I was good as new
I don't know what the mechanic was doing with the leak dye??