I have used this for all of my friends new babies and I can tell you, it works. all of my friends have babies now, 10 total that I have used this on. Inevitably they end up trying to get you to hold their damn kid. I am genuinely uncomfortable doing so. So I tell them I shouldn't, nor should anyone else. they obviously ask why. I use the excuse my vet gave me, "dont bring your puppy to the park for the first 4 to 6 months, because they don't have all their shots yet, so any dog carrying something, your puppy can get it very easily" Just wait until you see the look on their face. the gears are turning, realizing all of the strangers they willingly handed their bean of joy to, with out ever considering this. yes it only works for the first year, but as I have also learned, it won't matter much by then because they will be so self involved with a child, you probably won't be visiting anymore anyway. have a great day all, stay safe!