I've never used one before, got one given to me that holds 200lb with electric timer. I plan on putting it out after the season to help the deer for the winter since no acorns this year but have no idea what to put in it, how often to set the timer to feed them and for how long to let it run when it goes off (10 seconds?) . I got a solar charger for it but once I put it out in Jan I will not be back to check it until late March. I am sure it will run out before then but need recommendations.