How do you clean the shells?

C

I have been using all in one diapers for the first 8 months but my son is getting too big. So I switched to the waterproof shells and folded inserts. I was told you can wipe them down so you can reuse them (with pees). But I don’t really know how to clean it well enough but keep it from getting too wet. I’ve been just throwing them in the wash every use lol. Any tips?