Fall is rodent season in Virginia Beach — as nights cool, rodents that bred outdoors through the
summer look for somewhere warm and dry to overwinter, and your house is the best option on the
street.
But autumn is when rodents become *visible*, not when they arrive. The population that moves in
during October built up through June and July, and the gap it uses has usually been open for
years.
That's why the most effective time to do exclusion work is spring and summer — ahead of the
autumn move indoors. Seal in August and the autumn population arrives, finds no way in, and
stays outside. Seal in November and you're doing damage limitation.