Fruit flies are primarily a nuisance pest, yet they can infect food with bacteria and other organisms that cause diseases.

While most are thus beneficial by keeping weeds at bay, some occasionally become nuisance pests on crops like alfalfa.

While flying insects like mosquitoes and flies are considered "nuisance" pests, some winged visitors demand considerably more respect.

They are primarily a nuisance pest, and do not bite.

It is found both indoors and outdoors and can be a nuisance pest.

However, their congregation habits and excreta can annoy people; thus, they are considered nuisance pests.

X. hellerii has become a nuisance pest as an introduced species in a number of countries.

Some feral populations, such as that in Florida, have a reputation of becoming nuisance pests on occasion.

In fact, it may locally become a nuisance pest of millets and similar grains.

In aquarist terms, it is considered a hardy Chaetodon and beneficial for the control of nuisance pests.