Parents Outraged Over "Leak-Proof" Sippy Cups Plugged Up By Mold

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MONTREAL (CBSMiami) – Facebook posts of moldy sippy cups have gone viral – and it has families disgusted, outraged and concerned.

Simon O'kanada, who lives with his family in Montreal, was wondering why his young son kept getting sick.

The father opened his son's Tommee Tippee sippy cup to find it covered in a thick layer of mold.

O'kanada's friend Marie-Pier S. L'Hostie shared photos of his son's sippy cup on Facebook.

The post took off, with nearly 46,000 shares.

Not before long, another parent added to L'Hostie's post.

"After having received several message of parents who have opened up the anti-leak of the cup of their children, it is important to do something," wrote Penny Powell.

She added several more pictures of opened sippy cups lids filled with mold, which has been shared over 100,000 times.

BuzzFeed received a statement from Tommee Tippee France. It read:

"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. Difficulties have arisen though when liquids that are not recommended for use in the cups have been used, like thick formula milk, pulpy juice and warm liquids. We also recommend that cups are not left for long periods before being cleaned."