The Hidden Danger Inside Baby's Sippy Cup

You cleaned, you sanitized, but is baby's sippy cup really safe?
ByAnisa Arsenault
Associate Editor
Feb 2016
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Photo: Tommee Tippee

Parents of toddlers are uncovering a dirty little secret lurking within their sippy cups: The insides of many mouthpieces are coated with irremovable mold. Not only that, but parents are claiming this is making kids sick.

Specifically, Tommee Tippee is the sippy cup brand under fire. Parents that have come forward are all based in Canada, but the valve that seems to be collecting mold is used on brand models distributed worldwide. (Tommee Tippee has two different sippy cup designs: a straw cup and a valve cup, the latter of which is the one causing concern.)

Take a look at one of the photos, shared by Montreal mom Marie-Pier L’Hostie:

Mon ami Simon O’kanada se demandait pourquoi son fils était toujours malade. Il a donc brisé l’anti fuite de son verre à…

Posted by Marie-Pier S. L’Hostie on  Thursday, February 18, 2016

While that moldy photo speaks for itself, here’s the English translation:

“My friend Simon O’kanada wondered why his son was always sick. He broke the anti-spill top of his ‘Tommee Tippee’ bottle and discovered mold inside the mouthpiece. It doesn’t wash and can’t be seen unless it is broken open. He called the company, and the lady on the phone laughed out loud. Several moms on other groups have also discovered mold after my post in another Facebook group, so I’m sharing with you. If you please, those who have these cups, pay attention! Being washed by hand or in the dishwasher, the mold will stay there!”

Apparently, several other parents within the Facebook group that L’Hostie and her friend Simon are members of broke open their Tommee Tippee anti-spill valves to discover the same thing. Without cracking that piece of plastic open, the mold would be undiscoverable. And that means it’s also non-washable.

Tommee Tippee has provided The Bump with the following statement, indicating a clear valve is in the works:

We have reviewed the Facebook pages and are now in contact with the Dad referred to in the original post. We are talking to him about his use of the cup as we always welcome parents’ feedback, comments and ideas.

We are taking this extremely seriously as baby health and wellbeing is at the heart of absolutely everything we do. Nothing is more important.

We continually develop our products and look for ways to improve them, so feedback from parents is vital to us. Positive feedback tells us we’re doing the right thing, but just as importantly, like all companies, we learn even more when negative experiences are brought to our attention.

We’ve sold millions of Sippee cups and have had some very positive feedback. However, we know from visitor posts that a few people have not had a good experience with the valve part of the cup. For this we sincerely apologise and we are actively following up on any concerns raised.

We want to reassure all parents that we have extensively tested the valves including testing them with a panel of 140 mums in the United States.

The results support that when used with recommended liquids (cold, light fluids including water and non-pulp juices) and cleaned in line with instructions, there are no problems.

However, we want everyone to share our confidence, so we will shortly be making a transparent valve available.

The testing also showed that difficulties can arise when liquids that are not recommended for use in the cups have been used, like thick formula milk, pulpy juice and warm liquids. We strongly advise against using those products. We also recommend that cups are not left for long periods before being cleaned.

Our Careline team are happy to speak directly to any parents who have concerns. This will allow us to hear their views, and replace the valve or full cup with an alternative of their choice. The toll free number to call is 7-877-248-6922.

We’ve also prepared a range of FAQ’s and videos to help parents care for their cups and valves. These can be found at

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