I used the Stick in my bathtub and it seemed to work. Three days later I saw a blue residue around the drain and I put my hand down to remove it. I had forgotten the Stick was blue. Gummy and very soapy, when I remembered the Stick, very scary. On the package only info about eyes and mouth. Washed my hand for 10 minutes and let water run for 5 more minutes. I hope my hand is okay. Why no warning about potential back-up with chemical residue?
Bottom Line: No, I would not recommend this to a friend
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