What clued you in to this?
R has some redness/rash on inner/upper thighs and in front - not on his butt. Its not terrible but not normal. I thought it could be detergent sensitivity (tide), wetness sensitivity, or reaction to the stay-dry material. I put him in BG 4.0's one day with no change. I did natural fibers all day yesterday and it was better last night. He gets changed about every 2 hrs unless he's sleeping. He's in natural fibers at night.
Just wondering if this sounds to you like it could be the 4.0's before I get rid of them...thats half my stash.
Re: Those who have LO's with sensitivity to the BG stay-dry material....