Also, in my opinion the seller is deceptive. They appear to list items like this in small batches, multiple times - looking at their store front they have another listing for this product (purell 965124) with multiple negative reviews about expired bottles. Why not just do one listing ... this way they catch more folks unaware.Expiration: ethanol (the sanitizer / alcohol here) does not expire. But it DOES evaporate and is able to slowly move through the plastic container. Over time, the concentration inside decreases. Below some threshold, the product does not sanitize effectively. Hence an expiration date ...