In it, the author offers no evidence to support any of his claims, but rather offers vague pronouncements such as "The increased risk for stings is an obvious concern" and "Some entomologists worry" the wasps are adversely affecting butterfly populations. (What butterflies? What entomologists? Why do they think that?)

 
Polistes dominula is covered with goldenrod pollen

The Penn State article goes on to advise (homeowners) to "make every attempt" at eliminating the nests, going so far as to claim "It is easy to knock down exposed nests and kill the queen." (This, after claiming the additional danger posed by the wasps is because they nest in enclosed, hidden spaces). The article also advises the use of  "wasp and hornet sprays (that) produce a stream of insecticides that can shoot up to 20 feet from the nozzle." Oh, don't forget: you're supposed to spray the nests at night. Just what we need - more idiots running around spewing insecticides.

I can tell you from experience: these wasps will studiously ignore you under every circumstance unless you blunder into or purposely attack their nest. I have been inches from hundreds of wasps and dozens of nests, and I have never been stung or attacked or even noticed. I think the danger posed by these creatures is negligible.

I have noticed Polistes dominula does not appear as susceptible to infestation by Strepsiptera, the endoparasitic "twisted-wing" parasites. I frequently see P. fuscatus infected, but never P. dominula.

Strepsiptera - infected Paper Wasp - Polistes annularis

Most paper wasps measure about 2 cm (0.75 in) long and are black, brown, or reddish in color with yellow markings. Paper wasps will defend their nest if attacked. Adults forage for nectar, their source of energy, and for caterpillars to feed the larvae (young). They are natural enemies of many garden insect pests.

The nests of most species are suspended from a single, central stalk, or pedicle, and have the shape of an upside-down umbrella. Some tropical species make nests that hang in a vertical sheet of cells. Plant and wood fibers are collected by the wasps, mixed with saliva, and chewed into a paper-like material that is formed into the thin cells of the nest. The nests are constructed in protected places, such as under the eaves of buildings or in dense vegetation. The nest pictured here was constructed under the iron railing of a bridge over the DuPage River West Branch. Normally a colony of several to several dozen paper wasps inhabit the nest.

The colony is founded in early spring, soon after the queens emerge from hibernation. As the colony matures, males and the next year's queens are produced. These queens mate with males and are the only members of the colony to survive through winter. In late summer or fall, the founding queen, workers (sterile females), and males all die. The newly mated queens hibernate, in piles of wood, in vegetation, or in holes. The following spring they emerge and begin the cycle anew. A similar life cycle is found in bumble bees.