using old pheromone bottles to make perfume

I have several empty Androtics bottles that I’d like to use to make my own perfume with essential oils and perfumer’s alcohol. I may dump some EOW into one of the mixes so my question is what is the best way to remove all traces of the former pheromones in an old cobalt bottle? I’ve washed them several times with dish soap (sealed and left in overnight) but I still get a “lingering” scent. Was thinking of filling them with good old clorox and letting it sit for few days, or would that be too harsh?

Try hydrogen peroxide. I think I remember reading somewhere that hydrogen peroxide works, but don’t quote me on that. Or maybe try rinsing it out with some perfumer’s alcohol.

thanks very much - I’'ll try the peroxide.