These things work great for cleaning out a coop. As with most tasks like this, a few tools are necessary. For the bulk of the bedding, this type of fork works WAY better and moves more material more quickly with less effort than a flat shovel. The manure dropping in between the tines just isn't much of an issue, unless someone is using dry sand or something for bedding. Flat shovels are good for getting the corners scraped out or knocking a tough deposit loose. Leaf rakes are good at moving material on a horizontal plane, but they aren't really designed for lifting things up efficiently. A future fork, Wonder fork, etc are a better tool in the coop.
We also use a shop vac for the "phase three" of the cleanup, as it'll also remove some parasites like mites, louse, etc. A tip on the Shop vac if ya use one: A squirt of insecticide before ya start and after you're done into the end of the hose while the vac is running will kill some of the critters that ya vacuum up too.
Might not hurt to wear a dust mask or respirator-type mask with a particulate filter if you use it inside a coop and the shop vac filter isn't efficient at trapping particulate. Not all filters are the same, and some work better than others.