Wild Boar Baiting
Not many people know this but boars usually follow raccoons, as the latter is very good at finding sources of food and the clever hog knows this - that's why they follow coons very often. So, whenever you stumble upon a large population of raccoons, expect to see some hogs in that area as well. Thus the coon urine works very well around a boar trap.
Now that we have that settled, let's talk more about baiting wild boars. Here are two main methods to do it (there are other methods as well): with old plastic barrels or with post hole diggers. Both are cheap and very efficient if you do things properly.
Let's start with the old plastic barrel. Food barrels are one the most efficient ways of baiting hogs - you simply fill the barrel up with whatever bait you have lying around and cut a 1 1/4-inch hole on its side, as close to the bottom as possible. You might want to reinforce it by using a metal plate. By doing so, you will be able to create some competition among the hogs as they will have to struggle to reach the food due to the reason that only one of them will be able to eat at a time. This means that some of the boars will sneak during the day in order eat (thus avoiding the night "traffic").
Now moving on to the post hole diggers. You will have to dig a post hole as narrow and as deep as you can, and then fill it with corn or any other bait that you normally use for wild boars. Most likely, the hogs will start digging and working the hole until no food is left. They will certainly not go away if there's still food there. The more they work for it, the more they'll get anxious.
All things considered, baiting wild boars isn't very difficult in comparison to baiting and luring other types of big game. With proper preparation and a lot of patience, you'll catch a couple of hogs soon enough!