I've been selling books and camera gear I don't need or want on Amazon for a few years. Generally it goes ok, this is one case where the train left the tracks. I have this little 40.5mm Marumi CPL I used with my Nikon 1 lenses and no longer need it so I list it for sale on Amazon in January 2021. No big deal. In April I get a note from Amazon that they've deleted my CPL because it contains pesticides. I reply to the Amazon message letting them know they are incorrect, my little CPL is a couple of pieces of glass inside a metal ring that screws into the objective end of a camera lens and it has nothing to do with pesticides. I go back and forth with them 4 times, filling on various web pages they want filled out, each time telling them are wrong. I also asked them for an explanation of how something like this can happen. They won't give an inch. It's late May, I've got some time to kill so I write Bezos a polite note explaining this situation and wishing him a happy retirement. Fast forward to early June, now the messages from Amazon all reference "Your email to Jeff Bezos" and they're looking into my problem. After a couple of these, I send them a links to various CPL filters they have listed on their site and explain mine is just like these and has no pesticides. We got this resolved two days ago, I was able to list my CPL for sale again. I never got an answer to how something like this can happen, In hindsight I should have dropped it, this took more than 3 hours of my time and even at the deplorable minimum wage here in Idaho ($7.25 hour) I will not be compensated if this little CPL somehow sells. I should add, the last person my problem got handed off to was helpful. He/she spent a couple of weeks investigating it, concluded it did not involve pesticides and was able to pull the strings behind the curtain for me to list it again.