We originally bought the Munchkin diaper pail, for no other reason than a simple lack of research. When our daughter was born we were primarily focused on cloth diapering and didn't plan for a disposable diaper pail. We later realized we still needed one and the Munchkin diaper pail was the first we saw when we walked in to the store, so naturally that's what we bought. At the time I didnt even realize there were different types of pails! Oh the ignorance of a first time parent! The pail was okay for us since we didn't use it much at first. Over time though, I realized I should have done some research on it first because it didnt really live up to expectation. This time around we went for the Diaper Genie Essentials instead and these are main pros and cons of each
In theory you expect the Munchkin Arm & Hammer pail to be better at odor control especially with the built in baking soda dispenser. The reality is that the baking soda dispenser is 100% useless and the munchkin pail can get a bit stinky pretty much at the same rate as any other regular trash can.
On the other hand, the Diaper Genie completely controls odor. You literally can't smell anything, at all. This is due to the layered bag and the clamp inside the pail.
The Munchkin pail comes with individual bags that have a plastic locking system. I liked this feature because it lets you know exactly how many bags you have and once you change the bag you can just snap it closed and take it out.
The Diaper genie "bag" isn't truly a bag, instead it is a dispenser with a really long tube of plastic that is equivalent of approximately 3.5 bags.
Each time you refill the bag you have to tie a knot at the end of the plastic to create the bottom of the first bag. When it gets full you have to use the built in cutter to cut the bag, tie a new knot and start over. Its an odd system if you ask me. But the benefit of it is that you can create a custom size bag and don't have wait for the bag to be full before emptying it. You can choose to cut it at any point, and start a new bag without wasting an entire bag. The irony is that the process of tying a knot at the top and bottom of each bag wastes a lot of the bag which is already expensive to begin with.
The Munchkin pail is simpler and easier to use with cheaper replacement bags but the Diaper Genie has unbeatable odor control which is one of the primary reasons to get a diaper pail in the first place!