Sapporo - Post Report Question and Answers
Are there any unusual problems with insects or other infestations in housing?
Mosquitoes at dusk near vegetation, the usual suspects in the woods, but only during the 3 months of summer. The great Japanese hornet resides in Japan, as a one may expect, and is responsible for about 50 deaths a year. - Sep 2015
Not serious, but bugs do come out when it gets warm. Short mosquito season. Some big Japanese hornets. No bugs whatsoever for half the year or more. - Sep 2011