If anyone was/still is wondering I put this kit to the test. I first cleaned out both my horns with a standard bach Trumpet snake kit and then washed them both out. Some gunk came out I thought Ok that is that. I then used the REKA Cleaning kit I bought after reading about it here on this site. WOW. I could not believe my eyes. I never seen so much crap come out of an instrument. It was like I was snaking out a sewage pipe as disgusting as that sounds. I let my Cornet and Trumpet dry and then polished them oiled them etc..., Well then I played them, holy cow! It's like my horns were reaching the notes I was playing before I got to them. Wow what a difference in response. I have just become a loyal REKA Cleaning set user for life! Just thought I'd pass that one on! It is important to keep your instruments in clean working order and I'm fanatical about it!