I have used those daytime drippers with "active scrape" loaded in them with good results. Forget who makes the drippers and the "active scrape" scent. I believe it is just a doe or buck pee like the other guys have been saying though.

nodose is right, the branch part would be the pre-orbital gland, but I have never seen it for sale.

By eyes = pre-orbital
In between toes = interdigital
meta tarsal = like just above hoves in back
tarsal = the one that is on inside of hind legs they pee over at scrapes