A layer of melaleuca mulch can help save the environment—and discourage termites. Melaleuca is an exotic tree species that has overtaken Florida wetlands, and to limit the problem, environmentalists have encouraged grinding the invasive trees into mulch. A study at the University of Florida shows that melaleuca resists termites better than other wood mulches. This mulch is mainly sold in Florida.
FloriMulch, from Forestry Resources, Inc.; $2.79 per bag (2 cu. ft.).