The use of soapy water and freezing as secondary steps for euthanasia in cave (Blaberus giganteus) and Madagascar hissing (Gromphadorhina portentosa) cockroaches.

Objective: To evaluate methods for euthanizing cave cockroaches (CCs; Blaberus giganteus) and Madagascar hissing cockroaches (MHCs; Gromphadorhina portentosa). It was hypothesized that both suggested methods would be effective for humane mass euthanasia of both species.

Sample: Approximately 800 CC.