I love these and use them in every load of laundry. I've never had a problem with the completely dissolving. I put one or two in while the top-load machine is filling up. The whole laundry room plus the entry way beside it smell great while I use these. Not to mention the way it makes my clothes smell sooooo good! It is hard to find this scent at a low price online, and it's seldom in stock at the stores, but Amazon usually has the tub for like $6 or $7. Love this product!