10 lbs this bag will last up to one year if it goes over a year it is recommended to take down and replace with another bag.  This size bag will drip for one to three days after a heavy rain allowing more activity for a longer period of time after the rain.  Sizes of bags will also determine how much more of the mix is applied to the bowl that he deer form under the bag every time it rains.  The bigger the bag the bigger the bowl that the deer will make under the bag.