I might try that.
I kind of think we get taken advantage of with a lot of those types of products. For instance, I started making my own Windex after seeing a "recipe" on the internet (1/8cu ammonia, 1/4 rubbing alcohol, and 1 qt water). It works many times better than the Windex you buy, and costs about $0.10/bottle, rather than $3.95/bottle.
I've heard of people trying to make their own laundry detergent, too, but I'm not quite up for that