I use the kiln-dried pine shavings and have also used straw.
When cleaning the shavings you pick manure out with the fork and then get the wet spot as well. Daily is best and if the horse is in you pick manure out several times a day.
The British way of cleaning shavings, which I use, is to toss the shavings at the wall. The manure will separate from the shavings and fall to the bottom of the little "hill" that you created when you tossed the bedding. After tossing the entire stall...rake.
For straw you use a straw fork and can pick up the entire manure "plop" at once, tip into your barrow or manure skip and drop the manure in, whilst keeping any straw on the fork.
If you get wood shavings from a mill be careful not to use any with walnut or any nut wood. This can cause a toxic reaction in horses.