I used Balistoll for a long time with occasional KG12 de-copperisation but I have switched to Boretec Eliminator and light coating of Boretec Friction Guard for storage,
Balistoll is very useful lubricant and protector.
Note: If you are switching to Eliminator you can't use any tools that containe brass, copper or bronze so you will have to buy all new brushes, jags and mops.