So, will vinegar help w/ a mild case of the funk? I think thats what we have. We also have toddler pee. We started noticing that after drying the MF inserts, more often than not there would be a pee smell left over in the dryer. I've changed up my routine a couple months ago and added a hot pre-rinse (we never needed a pre-rinse before). After that I've continued hot wash w/ Tide to just under the 1st to the 2nd line depending on load size, followed by cold rinse, cold rinse. This has mostly gotten rid of the phantom pee smell in the dryer, but its still not a pleasant smell in there. Would vinegar help that? And if I wanted to try vinegar, at what point would I put it in the wash? Can I put it on with soap? If I put it in with the last rinse, do I need yet another rinse to get all the vinegar out? Or, if you have any other suggestions I'd lover to hear them.