Since the beginning of the 21st century, the rapid disappearance of several types of cockroaches has been observed in Russia and other post-Soviet states.
A mass depopulation of cockroaches has been observed since the beginning of the 21st century in Russia and other countries of the former USSR.
have noted a rapid disappearance of various types of cockroaches from cities and towns in Russia, Azerbaijan, Kazakhstan, Ukraine, Moldova, and Belarus.
[citation needed] However, no such depopulation has been observed in larger Russian megalopolises such as Moscow, Saint Petersburg, and Nizhny Novgorod.
[1] Scientists from Chelyabinsk and Yekaterinburg have suggested that the oriental cockroach should be added to the IUCN Red List of Threatened Species.