Really, and I have been tossing them. I have a bunch right now as they had a bonus buy and I stocked up. I will try a clean one in the wash and see how it holds up. As long as it holds up well it can't be any worse than washing cloth diapers in the washer.
LOL, I have washed cloth diapers for NINE years and counting, as the youngest is still not out of diapers, and it does appear that I'm miraculously 9 weeks pregnant again, after four miscarriages and some weird hormonal issues that made the doctors and my midwife say I would never have another baby, so if this one makes it, I have at least 2 more years of cloth diapers. I haven't used paper diapers in, well, ever. The washer will be fine

You can run a bleach wash cycle afterwards if you want; add 1c bleach to the washer, no clothing, and run a hot water cycle, unless your septic system doesn't like bleach.
I use paper towels in the bottom of the incubator, the only thing I use paper towels for. [We use washable kitchen towels, cloth diaper wipes, reuseable everything, just about. It has saved us a fortune, even accounting for water, electricity and detergent.] I like the paper towels because if the humidity needs help, I can spray water in via the air holes and help spread it over a bigger surface area to bump humidity.
I have also some canning jars with sponges in them inside the incubator that I use to increase humidity. I do find I have to add water quite often, and I can't figure out why, as the humidity in the house runs 45%. But the bator, without help, wants to hover at way less. Very odd.