When you could clean it up in minutes with a carpet washer/e
Yes, but that involves lugging a big heavy carpet cleaner out, setting up, making sure you have carpet shampoo in, washing the thing out afterwards and putting it away, all for 1 poxy spillage? No thanks. You'd also still have to wait a few hours for the carpet to dry, whereas with the Duo-P powder, you can walk on it, leave the furniture where it is etc.