The interception of exotic ants and termites from stone and lumber imported into Korea is on the rise, including Solenopsis invicta. Currently, a relatively long exposure (24 h) of methyl bromide (MB) fumigation is the only practical disinfestation option for exotic ants and termites on imported stone and lumber. In this study, ethyl formate (EF) wase evaluated as a potential MB alternative to disinfest ants and termites in imported lumber, with a focus on S. invicta. As S. invicta is not established in Korea, we first determined whether Reticulitermes speratus, established in Korea, could be considered as an EF surrogate of S. invicta. From 1 h EF fumigation trials, workers of S. invicta were more sensitive to EF than those of R. speratus based on lethal concentration × time causing 99% mortality (LCt_99%), supporting that R. speratus can be used as an EF surrogate of S. invicta. When R. speratus workers were further fumigated with EF for 4 h at four different temperatures, LCt_99% values for R. speratus workers were 108.00, 63.31, 77.24, and 67.24 g h/m³ at 2, 5, 13, and 23 °C, respectively. From scale-up (0.65 m³) and commercial scale (76.4 m³) trials containing two infestation-prone lumber species, lauan (Shorea spp.) and acacia (Acacia spp.), 140 g/m³ EF at >5 °C for 4 h resulted in the complete control of R. speratus workers, suggesting that 140 g/m³ 4 h-EF-fumigation may be applicable as a potential MB-alternative treatment for disinfestation of invasive S. invicta on imported lumber.

从进口到韩国的石头和木材中截获外来蚂蚁和白蚁的情况呈上升趋势，包括Solenopsis invicta。目前，相对长时间（24 小时）的溴甲烷 (MB) 熏蒸是对进口石材和木材上的外来蚂蚁和白蚁进行的唯一可行的灭虫选择。在这项研究中，甲酸乙酯 (EF) 被评估为一种潜在的 MB 替代品，可用于对进口木材中的蚂蚁和白蚁进行灭虫，重点是S. invicta。由于S. invicta未在韩国建立，我们首先确定了在韩国建立的Reticulitermes speratus是否可以被视为S. invicta的 EF 替代品。从 1 小时 EF 熏蒸试验中，S. invicta 的工人基于致死浓度×时间导致 99% 死亡率 (LCt _99% )，对 EF 比R. speratus更敏感，支持R. speratus可用作S. invicta的 EF 替代品。当R. speratus工人在四种不同温度下进一步用 EF 熏蒸 4 小时时，R. speratus工人的LCt _99%值为108.00、63.31、77.24 和 67.24 g h/m ³在 2°、5°、13°和 23° C、分别。从比例放大（0.65米³）和商业规模（76.4米³）含有两个侵染易木材物种，柳安试验（娑罗属。）和阿拉伯胶（Acacia spp.)，140 g/m ³ EF 在 >5 °C 下持续 4 小时可完全控制R. speratus工人，这表明 140 g/m ³ 4 h-EF 熏蒸可能适用于潜在的 MB -对进口木材上的侵入性S. invicta进行灭虫的替代疗法。