I bought this because I live in a dry tropical island. Having many plants some with more watering needs than others. This facilitates my life in watering. Bought the smaller bags so I can store and use when planting new plants. Will be buying more.
I highly recommend this product. I use it in home-made potting mixes which I use for potting up annuals at client's gardens. The 3 oz. size is very convenient to use, as I only need a little for each mix. The product itself is a great way to cut down on having to water potted plants during the dry spells of summer, esp. if the client can not be depended upon to do watering (as I only visit the client's gardens once per week).