You can get them for around $2 per bag, without too much hard shopping, and you can use each bag maybe 4-5 times, so that's about .50 per. I find that oftentimes, for one reason or another, I'm not using the bags every time I go (either there is a public bathroom, or a P in the woods out hiking or whatever).
Not trying to convince you - and I might not want to use them for a family of 6 (but then I wouldn't want to use a PP for a family of 6 either!); just showing how I break down the cost/use.
Raya
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