Quite amazing that the cockroach, which is one of the most hardy animals, is actually becoming endangered/extinct in Russia? Possibly the cold weather has something to do with it, in addition to modern technology. Any Russian readers would like to confirm that this is true?
A side note that in tropical Singapore, cockroaches are far from endangered despite frequent fuming and spraying of insecticides, usually at the rubbish chutes. In fact, in most HDB apartments, spraying insecticides at the rubbish chutes actually may increase the number of cockroaches in the house due to those escaping/flying from the rubbish chute where they ordinarily live.
Quote: A mass depopulation of cockroaches has been observed since the beginning of the 21st century in Russia and other countries of the former USSR. Observers have noted a quick disappearance of various types of cockroaches from cities and towns in Russia, Azerbaijan, Kazakhstan, Ukraine, Moldova, and Belarus.
Quote: House cockroaches began to disappear in Moscow during the beginning of the 2000s. Many Russians were even making jokes about it saying that it was one of advantages of Putin’s regime.