The use of herbicides in modern agriculture has become common practice since their introduction in the 1940s. While the benefits are observed though high crop yield, the potential side effects of these chemicals are currently being assessed. Alachlor is a common herbicide that is utilized to prevent pre-emergence of broadleaf weeds and grasses. While alachlor is a human carcinogen at high concentration levels, its effects at environmental concentrations require further observation. This study utilized the invertebrate system Euborellia annulipes (ring-legged earwig) to examine the effects of alachlor exposure on adult females and resulting offspring. Females exposed to levels of alachlor found in surface water of agricultural developments had significantly smaller clutch sizes than did non-exposed and those exposed to concentrations similar to agricultural ground water concentrations. Overall growth, basal follicle length on day 10 post oviposition, length of embryogenesis, hatching success rate, and behaviors including cannibalism and mating remained unchanged. E. annulipes thus provides a useful model for assessing potentially toxic environmental contaminants. Additionally, understanding the mechanisms by which alachlor affects reproduction in earwigs may lead to practical methods of pest suppression.