Some of you may want to try this. It is hilarious. Several years ago my motorcycle riding buddy & I went to Costco. He found me in one of the isles and showed me some product with the "know to be cancer causing" CA sticker. It was peal off sticker. Sooooo..... he wanted me to help him. Went back to where the product was and pealed off half a dozen stickers.
Took these stickers over to where all the toilet paper was located. Pasted these stickers in conspicuous spots on the bulk TP packages.
Wasn't long until an eagle eyed lady spotted one of the stickers. Big conflagration ensued between the lady and a Costco employee & manager.
Thank goodness we were one isle over - I laughed so hard and I almost peed myself.