
This product turned the toilet bowl yellow very quickly. I used a cleaner as directed and this is how it looks after 2 weeks. This is not normal for our family (2 working adults). Without the cleaner, the bowl would have turned out exactly as in the photo in a month. This can be the material from which the shell is made. As you can see, the yellow color is only where the blue water is in constant contact with the bowl. During the 1 month return I cleaned the bowl once (looked worse) and this is how it looks at the end of the return period.

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