Having recently acquired a terrific old vintage horn with original case, I encountered the old curse -- stinky horn and case.
First I gave the case the several-days-of-direct-sunlight treatment, and cleaned it thoroughly. Then the horn (a straight soprano) was thoroughly cleaned/washed inside and out. I used naphtha (lighter fluid) to clean the pad surfaces. Then the departure: I sawed a block of cedar into domino-sized slabs, and placed four of them under the horn in the case. I put the sawdust that was generated into a small cotton bag, and dropped it down the bell of the horn. I'd say that the "musties" problem is 80% licked, and the horn is much more user-friendly.
For my larger horns, I found that creating a "sausage" of cedar shavings (check the store's pet section) stuffed into old nylon stockings, and placed strategically within the case, goes a long way toward making an old case very pleasant to open. Drop one of those cedar sausages down the bell of the horn, too!
I've never found a way to totally get rid of the stinkies, but this method goes a long way toward that goal. My wife lets me keep my new/old horn in the house now!
First I gave the case the several-days-of-direct-sunlight treatment, and cleaned it thoroughly. Then the horn (a straight soprano) was thoroughly cleaned/washed inside and out. I used naphtha (lighter fluid) to clean the pad surfaces. Then the departure: I sawed a block of cedar into domino-sized slabs, and placed four of them under the horn in the case. I put the sawdust that was generated into a small cotton bag, and dropped it down the bell of the horn. I'd say that the "musties" problem is 80% licked, and the horn is much more user-friendly.
For my larger horns, I found that creating a "sausage" of cedar shavings (check the store's pet section) stuffed into old nylon stockings, and placed strategically within the case, goes a long way toward making an old case very pleasant to open. Drop one of those cedar sausages down the bell of the horn, too!
I've never found a way to totally get rid of the stinkies, but this method goes a long way toward that goal. My wife lets me keep my new/old horn in the house now!