Nathan, can you elaborate? I've always been told that it is important...esp for mares foaling in a stall or somewhere other than clean pasture.Jan
A pasture is not exactly "clean". I can think of all kinds of ways that a "clean" paddock or pasture could be far worse than a stall, even a dirty one. Wildlife traffic (no fence can keep out all small wildlife and insects, etc.), the poo of various farm animals, wildlife, and insects that may have roamed the land, birds, bird poo (birds can harbor all kinds of nasties), dogs, dog poo (a lot of horse people have dogs), cats, cat poo (a lot of horse people have cats and/or the neighborhood cats aren't as easy to keep out of paddocks and pastures as dogs), lots and lots of potential for poo obviously (LOL), anything that the soil could be harboring (all kinds of bacteria, mold, etc., etc., etc.).
I have never dipped a foal's navel into anything and I have never lost a foal (and I am certainly not saying that I will not ever lose a foal to something, just that I haven't yet) for any reason or had any major (or even minor) complications or illnesses in foals, ever. I do not look down on this process, I just know from experience that it is not 100% necessary nor fool proof. I have a very, very healthy, happy, useful 14 year old gelding and 11 year old mare, both of which I bred and foaled out myself, standing on the farm right now (as well as several others that have long since gone on to other homes) to prove it.