I have bottle sections from when I've scraped the residue off but they have lots left on and it would take too long to scrape them properly with a knife eg. Is there a way I can quickly get the remains off and if so how do I do it and get rid of whatever is used so it can be smoked. I have no alcohol, nail varnish remover etc. Can I use water and salt and if so how do I get rid of the water and salt?