One dad took to social media when he discovered his daughter's sippy cup was hiding mold and making her sick.

Credit: Craig Beresford/Facebook

Just a may feel a little sick to your stomach after reading this post. And maybe a little bit like a bad parent.

Last week, dad Craig Beresford posted a picture of his daughter's sippy cup to Facebook. Big deal, right? Almost all of our kids use sippy cups, or have at one point in their lives.

Right, but...the cup Beresford's kid was using had parts that were tough to get to when cleaning. And when the self-described "OCD" dad finally managed to get them apart, he found something hiding inside the crevices he hadn't been prepared for: mold.

"Just a note to anyone using a Sistema Twist 'N' Sip reusable drinks bottle, either themselves, or by your children," he wrote. "Although we have been absolutely meticulous cleaning the bottle and cap every day, including dispersible sterilising tablets, the cap has been making our 7 year old daughter poorly. We haven't been able to work out why she has had an upset stomach, and occasional runs for what seems around four weeks, until I figured it might be the Sistema bottle. It's the only constant item she has had contact with the whole time. Today, I took a sharp knife and broke the cap apart. It isn't designed to be taken apart and requires a bit of force to disassemble. The internal components have been hoarding bacteria. We were horrified and heartbroken that out little girl had been using this bottle in this state."


After seeing Beresford's post—which has been shared close to 50,000 times—other parents quickly began checking their own cups, then uploading photos of cups in the comments, all with the same gross mold.

Sistema quickly responded on its website, stating that it manufactures its tops to meet international child safety standards, and that it's for this reason they can be difficult to disassemble. "Recently a number of our customers have advised us that they are having difficulty cleaning our Twist 'n' Sip drink bottle caps," the website reads. "We take this feedback very seriously and have therefore posted videos and instructions that demonstrate how to take apart and clean each of the three tops we currently have on the market."

It sounds like a lot of effort to us. But if you have one of these sippy cups, or a similar brand that's hard to clean, check out the cleaning videos here.

Hollee Actman Becker is a freelance writer, blogger, and a mom. Check out her website for more, and follow her on Twitter at @holleewoodworld.