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You feel good about switching from single-use plastic water bottles to reusable ones — you’re saving money and the environment at the same time. But if you noticed the water coming out of that eco-friendly water bottle doesn't smell or taste so fresh, it's time for a good scrubbing.

To keep your water bottle at its best, wash it every day. Here’s cleaning expert Leslie Reichert to tell you how to do it.

If you have a screw-top bottle, you’re in luck. All you have to do is separate the top from the bottle and run both pieces through the dishwasher every day (top rack only, of course). Make sure the drying cycle is on because the bottle needs to be completely dry. If not, it will become a breeding ground for germs.

Another option is to wash the bottle in warm water and detergent every day. Use a cloth or brush on the inside to remove any slimy build-up that may have formed. Rinse well and dry thoroughly before using.

Bottles with pull-up/push-down tops and those straw-type tops that you lift with your finger need a little extra attention during their soap and water bath. To clean those hard-to-reach nooks and crevices in the drinking spouts, use a small bottle brush. Rinse well and be sure to dry completely — either by air-drying overnight or hand-drying with a clean cloth.

If, after regular cleaning, the bottle still doesn’t smell fresh, try sanitizing. Fill with either:

Another method of sanitizing involves alternately spraying with hydrogen peroxide and vinegar, according Dr. Susanne Sumner. She recommends starting by cleaning the bottle with soap and water. Next, spray the bottle with either hydrogen peroxide or vinegar. (It doesn’t matter which you use first since each kills different strains of bacteria.) Allow the spray to sit for 3-10 minutes, then wipe.

Follow the same procedure with the second one. Do not mix the two in the same bottle because the solutions together are unstable and will become ineffective. Rinse, then air dry.

Experts generally agree that most germs are removed by simply washing with soap and water or in the dishwasher. Sanitizing does not need to be done on a daily basis. However, if the bottle is shared among members of a group (as in childcare or school situations) or with a sick person, it doesn’t hurt to take extra precautions.

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This article was originally published March 3, 2016.