I have been using cloth diapers (this kind: https://www.amazon.com/Leekalos-Diapers-Reusable-Inserts-Undersea/dp/B08PBHP749/ref=sr_1_2) for about 8 months on my 10 month old and the diapers are really starting to smell. When they're fresh out of the dryer, they smell. When I air dry the inserts they smell up the room with mustiness. When she pees in them they reek powerfully, I believe of ammonia. We wash the diapers every day. About 15 diapers get washed a day and I have about 36 diapers on rotation.
We have hard water. I use All Free Clear detergent on the diapers. When washing, first I put them on a cycle without soap and two rinses with cold water (to save on warm water), next a wash cycle with detergent and warm water. Then the inserts go in the dryer in a laundry bag to tumble dry a while before air drying more later, while the covers air dry.
I believe my problem is detergent buildup on the diapers. I have researched and come across all types of hearsay info online about what's wrong with my wash routine and how to properly strip my smelly diapers. I haven't been able to find reliable info.
Thank you in advance!
Edit: I'm studying all of the answers and comments and experimenting with washing variables daily. Thank you everyone! I hope to post updates soon.
Sep 27: Apparently our washer is only running cold water no matter the temperature setting I select... no wonder the diapers aren't getting clean.