We used maaaaaaaybe 3 or 4 of these one time...the rest have just been through the initial triple wash with Charlie's Organic Soap (as the directions for cloth diapers suggest) and sat unused in a smoke-free household. We have 14 Thirsties AIO with the waterproof cover already on the outside and 7 of the Thirsties AIO natural bamboo without the waterproof cover. We have 2 of the waterproof covers Sherman Station, Maine »