Companies can claim that something is BPA-free when it’s not, but I don’t know the quality of your tumbler. It could be from the straw. I know you clean it thoroughly, but they can be hard to sanitize. If you have a dishwasher I’d put the straw in so the heat can kill the bacteria.
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Are you sure they are getting clean?
There have been studies done, including one on our local radio station and the found that they were not getting clean.
The one was a female DJ, and hers was just awful, and she was shocked at all that was on it.
She thought she was cleaning it really well.
Just a thought.
You sound like having an allergy reaction to the plastic of some kind that deals with the tumbler, but hard to say.
Are you washing your straws?
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Same, my husband bought me my first Stanley , name brand and all, and ever since, my throat and voice is having issues I am not sick and its not laryngitis either , first I lost my laugh, its not the same, then a week past and I lost my voice now another week later I am having trouble swelling so I stopped using it. I to was cleaning it thoroughly but the only thing that changed in my life was me using this Stanley. So I have stopped and we will see if this inflammation goes down, it is so weird, my voice comes and goes and is raspy, I do not smoke , I do not vape, I do not drink alcohol, I am not a singer. There should be no reason to have had my voice box, esophagus get like this.
I am experiencing the same thing with my Stanley tumbler which I received as a gift 2 months ago. This happened from the very 1st time I used it, therefore it shouldn't have had bacteria build up. I hand was & sterilize it and make sure it is completely dry before putting the lid back on. I will try without the straw in hopes that it will make a difference.
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