Buck rags have never worked for me...they always act interested in the rag...it's smelles like a strange goat. NOW...If I take the buck rag and rub it on my wether...they have shown more interest in him which has indicated heat for me. You are looking for lots of interest...tail flagging, lip curling, baaing, calling. I did have one doe that got excited and looked behind me to see if there was aboy coming...so that helped...but a real live boy is a better tease.
Usually I know anyhow...they call and yell more often, back up to us or squat and pee right in front of us, sniff their own pee and do the flehmen/lip curl thing, mount other does and act...well...crazy
I have done the buck rag with great success. Take that rag and make sure it smells really good (bad). Go all over their head and where they pee on themselves.
The purpose of the rag is to see when the doe is in heat, it will not bring her in. If she smells the rag and starts wagging her tail, mine have pawed at the rag, then you know they are in heat or going in.
Ive used the rag with success..as Lori said..it wont bring them in heat but my girsl will "flirt" with it...or just show more interest init. I have a few girls who can care less lol...but for the most part..it works..It does have to be real smelly....I do like the idea of the wether...but feel sorry for him..like taking a girl tothe prom but never getting to dance with her lol...