Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Do NOT buy!
Review: Blue Juice is a horrible product if you want your trumpet or other brass instrument to last do not but Blue Juice. Blue Juice leaves behind a residue in all your Valves/Slides. Some music stores promote it but it honestly is not worth the buy if you want a great valve oil I highly recommend Al Cass Valve Oil which lubricates valves perfectly while Blue Juice has to be reapplied each time you get out your horn Al Cass lasts for a very long time with no side effects.
