Guys, I've got news: a true deep litter method involves neither weekly litter removal nor dropping boards. The WHOLE POINT of the deep litter method is to eliminate both of those things.
Droppings boards keep the poop out of the litter and totally exposed so they have to be cleaned often (daily) and they smell until you do.
DLM starts with three or four inches of litter (preferably pine shavings, pellets or something that absorbs moisture and won't mat down easily--I would not use any kind of paper or straw unless the straw has been chopped up thoroughly, and even then it isn't great). Throw in some scratch every now and then so the chickens keep it stirred up. When that layer is "full," meaning that it can't handle any more poop without starting to smell or get too wet, you add another couple of inches of litter. You keep adding a couple of inches at a time every few weeks until you have about a foot or so of litter. If the chooks aren't turning it over enough, go in about once per week and stir it up with a three-pronged cultivating rake--wear a dust mask. The litter should be just moist enough to stay together when you squeeze a handful. If it falls a part readily, it is too dry. Spray a little water on it and stir it in. If liquid drains out of it, or it is muddy, it is too wet. Over time, if you get the right amount of moisture, oxygen (from scratching and turning) and poop, it will start to decompose and eventually turn into good compost for the garden. Decomposition will generate a little extra heat. It also creates a bacteria that eats the smelly bacteria and is inhospitable to fly larva. This can go on for a year or more. Most people "spring clean" their coop and dump the now composted litter in the garden and start over.
I am going on about a year using DLM with 8 chooks in a 7 x 13 coop and I have no smell, no flies and no dropping boards. My coop smells like a nice clean barn. I don't clean the coop and I haven't added new litter in 2 months.
Google "deep litter method" and you will find lots of information on it.
UGCM