Hairy chinch bug populations were monitored in Columbus, Ohio in turfgrass from March 2004 to present. These sucking insects can rapidly destroy a large area of turf if left untreated. Two generations were observed in the field, with the second being slightly smaller than the first. Adult chinch bugs overwinter in thatch and other plant debris. Oviposition occurs in late May and again in August. Nympal populations do much of the damage during the hot summer months. Adults begin their reproductive diapause in October.