Some said it had worked, others said it was the scam then I think: two at a time but is it not the result that counts! Personally, I admit that the price is exaggerated compared to an image (no more than visual), a color board of stickers and a booklet with tips. By cons, no regrets because the method works. You just had to think about it. For a girl who would not even sit on the pot for 2 days she has no layers (and no accidents for now) at home and in the nursery. For home results in less than 15 days and for the crib a little less than a month. Thank you