It did such a good job that I bought a second one to put in my caddy to take the edge off the dampness in there. It's made a huge difference and it hasn't smelt damp in there since.
They're super easy to put together. The salt block just slots into place and you clip it closed. It has a little clip that you unhook to make an opening to pour out the water when it has collected in the bottom.
Super easy to use. And great to have something working away and not using electricity even when I'm away on holiday.