In re brushing teeth etc before playing, now that I am retired, it is easy to do. Earlier it wasn't and as above there were always temptations to eat/drink on the gig. And it makes a considerable difference in how long subjectively my horns "feel" clean. I do rinse the mpc each session, and use the mpc brush once a week. Occasionally I snake out the leadpipe every couple weeks if I am in too much of a hurry--not too often--to clean the entire horn. But the really important addition to my hygiene is a Waterpik. The stuff that emerges even after brushing or flossing has convinced me this is the only way to fly. So, I waterpik before rehearsals or practice sessions. After several months of not cleaning a horn which I am playing frequently there is little that flushes out. However, point taken in re the chemistry of saliva. I am going to increase the frequency with which I flush them all.