La Tromba AG In Clean

I have used this cleaning fluid for my tubas. Very large and heavy instruments, so internal cleaning can be difficult. After some trial and error, I found the best way to use it was to mix this cleaner with water (in the correct proportion) and then place that mix into a spray bottle. I then spray the mix inside my tuba. Wait a few minutes. Do it again. Wait, agin. Then flush out the tuba's pipework with fresh running water. Works very well and no having to lift a heavy tuba around during cleaning.

This fluid has good smell and is not too harsh to the hands. Not sure about "protection" efficiency but it seems to be gently cleaning.