MontiiCo products are made from durable 18/8 stainless steel. The stainless steel that we use to manufacture our products is the same grade that is used most commonly in the food, beer and wine industries because it is easy to clean, durable, and does not impart flavours or leach chemicals into the beverage contents.
If you have a metal allergy or sensitive palate, you may detect a metallic taste. Please let us know what product and cap you’re using – sometimes swapping out the lid to a Sports lid is a great solution, since those caps are Polypropylene and create a barrier between your mouth and the bottle itself.
We also recommend soaking your bottle overnight with hot water and baking soda. Follow the soak with a good scrub using a bottle brush or the abrasive side of a dish scouring pad aided by a wooden spoon or other kitchen utensil for leverage. This usually works to remove any lingering tastes/ residues.