Dear Natural Science Industries:
I’m writing in reference to this product:
May I make a suggestion? Please include a warning on the box that notifies purchasers that the process takes at least a month.
That’s right: one month.
Oh, and that the tumbler sounds like an airplane taking off.
And it must run continuously.
Let’s recap: If you use this item, your house will sound like an airport every moment for at least 28 days.
Potential purchasers need to know this. Please warn them accordingly.
I thank you from the bottom of my bloody ear canal.
Sincerely,
Beth (mother of Gideon, who likes rocks)
Observe and report 
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