Wasps & hornets are generally tough and generally mean stinging insects. They're diverse; wasps run a gamut of sizes, colors, and behaviors, from the standard-issue yellowjackets we see in NE Ohio, to large, solitary "Cicada killers," to the more peaceful paper wasps, to the fascinating coloring of the metallic-like bodies of "cuckoo wasps", to enormous and hysteria-inducing "Asian Gian hornets" which have been making their way to our region... and tens of thousands more!
Wasps are generally parasites or parasitoids as larvae, and feed on nectar as adults. In addition, many are predators; they use other insects as food for their larvae. Other kinds of wasps are omnivores, gladly feeding on fallen fruit, nectar, and carrion. Some wasps are social wasps, building large nests underground or spaces under homes, wall cavities or in lofts, with up to 3,000-10,000 workers. Other wasps are "solitary", and maybe build no large, typical nest at all!
A distinction should be made for what are called paper wasps. These lazy wasps get their name from their nests, made from plant stems & dead wood mixed with their salive, which ends up as a brownish or grey papery material. They're also called "umbrella wasps" due to the shape of their nests. Paper wasps are much more placid than their yellowjacket, hornet, and other wasp cousins; they'll generally only attack if something directly threatens them or their nest. They are beneficial pests, especially to gardeners, and they help out with biocontrol thanks to their feeding on caterpillars, flies, beetle larvae, and other insects (in addition to nectar). That said, their stings are quite painful and can be dangerous, and they can be territorial (and slightly more aggressive) when their nests are built near human-inhabited areas, like overhangs near homes and buildings.
We treat stinging insects with our highly-effective Power Spray service, which provides long-term protection against the building of new nests.