Chemical Removal

Streamflow dye tracer test on a tributary.


A broad variety of biocides (i.e., chemicals used to control noxious organisms) have been used to manage invasive crayfishes. Some biocides available today, including organochlorine, pyrethroid insecticides, and rotenone, have limited non-target impacts if applied properly (Gherardi et al., 2011). Biocides have thus far shown mixed results in their ability to controlling invasive crayfishes, although the effectiveness of biocides appears closely related to the specific chemicals being applied (e.g., Cabral et al., 1996; Peay et al., 2006).