@article{meissner_silverman_2003, title={Effect of aromatic cedar mulch on Argentine ant (Hymenoptera : Formicidae) foraging activity and nest establishment}, volume={96}, ISSN={["1938-291X"]}, DOI={10.1603/0022-0493-96.3.850}, abstractNote={Abstract In the laboratory, Argentine ant, Linepithema humile (Mayr), mortality was positively correlated to the length of an aromatic cedar mulch section that had to be crossed before food could be reached. When ants could access food without crossing the mulch, mortality was not correlated to mulch section length. In the field, Argentine ants showed a tendency to avoid aromatic cedar mulch as a nesting substrate. In plant beds alongside buildings the number of ant nests (pockets containing brood) found was not significantly different between aromatic cedar and cypress mulch. However, when pine straw mulch around oak trees was replaced with aromatic cedar or cypress mulch, a similar number of ant nests was found in the cypress mulch as in the original pine straw, whereas numbers in aromatic cedar mulch were significantly lower. Also, fewer ants were trailing on the trees surrounded by aromatic cedar mulch compared with cypress mulch or the original pine straw. The number of ants attracted to apple jelly baits placed alongside the buildings did not differ between mulch types; neither did the number of ant trails crossing the mulch beds around the buildings. We suggest that aromatic cedar mulch may help control Argentine ants and reduce insecticide input when applied in combination with conventional control methods.}, number={3}, journal={JOURNAL OF ECONOMIC ENTOMOLOGY}, author={Meissner, HE and Silverman, J}, year={2003}, month={Jun}, pages={850–855} } @article{meissner_silverman_2001, title={Effects of aromatic cedar mulch on the Argentine ant and the odorous house ant (Hymenoptera : Formicidae)}, volume={94}, ISSN={["1938-291X"]}, DOI={10.1603/0022-0493-94.6.1526}, abstractNote={Abstract In laboratory studies, the Argentine ant, Linepithema humile (Mayr), and the odorous house ant, Tapinoma sessile (Say), avoided aromatic cedar mulch as a nesting substrate. Both ant species were killed when confined with fresh aromatic cedar mulch in sealed containers. However, when confined with cedar mulch that had been aged outdoors for up to 140 d, mortality of L. humile was complete regardless of mulch age, whereas T. sessile mortality declined significantly over the mulch-aging period. Argentine ant susceptibility to aromatic cedar mulch was also greater than that of the odorous house ant when colonies were restricted to mulch in open trays. In addition, commercial aromatic cedar oil was lethal to both ant species. Our results suggest that aromatic cedar mulch may serve as an effective component of a comprehensive urban ant management program.}, number={6}, journal={JOURNAL OF ECONOMIC ENTOMOLOGY}, author={Meissner, HE and Silverman, J}, year={2001}, month={Dec}, pages={1526–1531} }