Insulated Bottle Deep Clean & Deodorizer Tabs

The user's insulated metal water bottle developed a strong, 'compost bin' smell (likely mold) after water was left in it, and multiple washes haven't removed the odor. This is a common problem with insulated bottles. There's an opportunity for a dedicated product—such as specialized cleaning tablets or a solution—that effectively eliminates stubborn mold and stale smells from metal insulated bottles without harming the material, going beyond standard home remedies.