The answer to 'fire ant extermination cost in Illinois' is that the typical cost for professional fire ant control and extermination in Illinois can range from $150 to $500 or more, depending on several factors. The size of the affected area, the severity of the infestation, and the specific treatment methods required will all influence the final cost.
For smaller infestations, DIY treatment options like baits and granules may be effective and cost $50 to $100. However, for larger or more established fire ant problems, it's generally recommended to hire a licensed pest control professional, as they have access to more powerful treatments and can ensure the infestation is fully eliminated.