Unclemeat

I recently purchased some Code Blue Tarsal Gland scent. I was expecting the usual gel in a bottle type. However, when I got it I was surprised and a bit confused. Inside the bottle is a little mesh sack sitting in liquid. My question is how the heck do I use this thing? It says drag and hang. Do I just drag this sack or will that over scent? Does that mean it is single use? Dip a drag rag in the liquid? Open the sack? Throw the whole thing out? Help me out here!!!

Thanks