Your guide to using and cleaning contact lens cases

When you wear reusable contacts, your lenses aren’t the only things you need to consistently clean. If not cared for properly, the contact lens case can also be a source of harmful microorganisms. Learn some strategies for keeping your lens case clean and how often to replace it.

Medically reviewed on January 28, 2026

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Published on April 8, 2026

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5 minute read

Key takeaways

Keeping your contact lens case clean is just as important as keeping your contacts clean.
Never use water or soap to clean your case, always use a multipurpose disinfecting solution.
Replace your case every three months, if not sooner.

Why your contact lens case matters

Ignoring contact lens case hygiene is a surprisingly common mistake—one study showed that 80% of reusable contact lens wearers use their case longer than recommended—but it’s a mistake you should never make. Think of your contact lens case as a home for your lenses. If the house is dirty, the lenses living inside will get dirty, too. Bacteria and other germs thrive in moisture, making a wet, neglected case the perfect breeding ground that can put your eyes at risk.

How to clean your case correctly

Every morning when you take your contact lenses out of their case and put them on to your eyes, it’s time to clean the case thoroughly. Here’s a simple four-step process to follow.

1. Empty it

Dump out all the old solution immediately after putting your lenses on your eyes. Never "top off" old solution with new solution. Leaving old solution in your case is kind of like saving yesterday’s bathwater and just adding a bit of soap in the next day—it dilutes the disinfectant and invites bacteria.

2. Rinse it

Squirt fresh contact lens cleaning solution into the wells of the case.

3. Rub it

Using a clean finger, rub the inside of the wells to dislodge any biofilm or debris. Then rinse it again with solution. Don’t forget to clean the cap as well!

4. Dry it

Wipe off excess liquid with a clean tissue and place the case (and caps) face down on a clean tissue or paper towel to air-dry. Moisture is the enemy here, so letting it dry completely is crucial.

Never use water to clean your contact lens case

In a pinch, you might be tempted to clean your contact lens case with water. Unfortunately, that’s a big no-no. Properly disinfecting your contact lens case means using a multipurpose disinfecting solution. Water does nothing to sterilize your contact lens case and can even contain microorganisms (including Acanthamoeba) that may cause serious eye infections if they come into contact with your lenses or eyes. This applies to distilled water and bottled water, too.

How often to replace your contact lens case

The general rule of thumb from eye care experts is to replace it at least every three months. If the case cracks or the caps get damaged, toss it immediately. Many people buy contact lens cases in bulk packs so they always have a fresh one ready. Often, a new case comes free with your bottle of solution—take that as a hint to swap out the old one!

Traveling with contact lenses

Traveling can throw off your hygiene routine, so plan ahead to stay on top of it. One major travel mistake? Pouring solution into random small plastic travel bottles. Once solution leaves its sterile bottle, it is no longer safe. Always buy travel-sized contact lenses cleaning solution or a designated contact lens case kit from a reputable source.

What if you lose your case?

Losing your contact lens case while traveling or on the go can be stressful, but if it happens, you have two options. One option would be to purchase a new contact lens case from a pharmacy or convenience store as soon as possible. Avoid makeshift or unclean containers, as they can introduce harmful bacteria and increase the risk of infection. The other option is to switch to glasses for the remainder of the trip, since you won’t be able to properly clean and disinfect your contacts. This is a prime reason why it’s important to always keep a pair of glasses handy as a backup.

What’s next?

Tired of cleaning your contacts and their case?

Ask your eye doctor about daily disposables. They are one-time use, meaning you don't have to worry about cleaning and storing your lenses. Just take them out at the end of the day and throw them away.

Find an eye doctor

Frequently asked questions

How often should you replace your contact lens case?

You should replace your case at least every three months. If you notice any cracks or damage, replace it immediately to prevent possible contamination.

Can I wash my contact lens case with water?

No. Never use tap water, distilled water, or soap. Water can carry harmful microorganisms that lead to infections. Always use a sterile contact lens solution.

Why shouldn't I top off my solution?

Leftover cleaning solution in the case may already contain germs and debris from the lens and from handling. Topping off also dilutes the disinfecting power of the fresh solution. This mix of contaminated and weakened solution can leave your lenses insufficiently cleaned and increase the risk of eye infections. To keep your eyes safe, always pour out the old solution, clean the case as recommended, and refill with fresh solution each time.

Can you run your contact lens case through the dishwasher?

No, water and soap should not come into contact with your contact lens case. Stick to the recommended routine and only use a multipurpose disinfecting solution.