I'm sure this has been covered before but please bare with me. I've got some empty 3ml amber glass bottles with eye droppers, that I'm wanting to reuse. One night I gave them a good 15min boil, rinse, 15min boil, rinse, then upside to dry. Next day repeated the same process. 2 boils and 2 rinses. Air dry overnight. Brought em and all the 30ml and 50ml bottles to work and got ready to fill the little ones up. They all still smell of old juice. Can the glass bottles be cleaned? I really thought the boiling would work. It's time for me to ask the pro's. Thanks.