One method in 2x2 cube of potato just under the soil, replace daily

Mostly you need to practice bad habits and leave your soil bare and exposed to the elements for several weeks, till it frequently to expose the wireworm larva, and maybe get beneficial nematodes. The cut potato Byron described works as a trap but you need to check it every couple of days and carefully seal that potato in something and toss it or the nemetodes will simply return to your soil, thankful for the meal you supplied them with.
Fire ant control is best described by the Texas A & M people.

Here is a link that might be useful: Texas A & M Fire Ant web site

The beneficial nematodes sounds like a good idea. This is a brand new raised bed that was filled with compost, purchased top soil and composted horse manure. I did have a layer of hay over the top of it to prevent weeds from growing until I started planting. The bed is already planted so I don't feel like redoing it is an option that I want to do.
What kind of trap would you suggest to use with the potato? Do you think compost tea will help? Thank you for all the help.