Invasive pests. With an absence of natural predators - they can wreak serious havoc in our garden and, sometimes our environment. There’s a category of invasive creatures which isn’t lethal to our plantlife, but it still strikes fear in the heart of many gardeners. I’m talking about fire ants, and the sting of these creatures is more than just a painful nuisance. It’s also the cause of the loss of human life every year in the U.S. So, it should come as no surprise, fire ant control is a high priority for many.