How serious is Hawaii about eradicating the introduced coqui frog (Eleutherodactylus coqui) in that state? So much so that for the next five days, part of a nature reserve and an entire state park on the Big Island will be closed down so that aerial spraying with citric acid can proceed. This is the third in a series of treatments for the Manuka Natural Area Reserve and Manuka State Park over the past several months. The government seems upbeat about their progress, but it has been a bit of a bumpy road so far, with inital attempts lacking in follow-up, and delays made necessary by drought conditions. For details, read the press release from the Hawaii Department of Land and Natural Resources. Interested readers may also want to check out archived ISW posts about the coqui.