Try adding warm water, to one drop of VIM cleaning detergent, two pinches of baking soda and let it soak for 5 to 10 minutes. Add raw rice to the same bottle and shake it continously for two minutes with out using brush. This cleans very well. Contributor: Sadhana
Add luke warm water, some raw rice and some rock salt to the bottle. Close the lid and shake it for few minutes. This cleans a bottle very well and also erases any smell. Contributor: Rajitha