I actually participated in a product test on them awhile back. A survey company gave me 24 to try over a two week period and then called and asked a barage of questions. I actually found cutting them in half just as effective as well. Also, once they were done in the dryer I continued reusing them as dust rags and scrubbies for things like my burner grills. I still have a few that I dust with. They are not cost efficient for me as I use the powder that I can get free with coupons, or the Surf or Gain in bulk from Sam's and rotate with the make my own. I also rarely use fabric softner. Environmentally, I figure the cardboard boxes are better than the plastic bottles. I'm afraid I'm not "green" enough to take it much further than that. I do think they are wonderful travel products and if I can find deals on them I wouldn't hesitate to buy them.
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