Hornet Control in Waukesha County, WI

Bald-faced hornets and European hornets are common in Waukesha County, building large aerial or enclosed nests. Bald-faced hornets create distinctive gray paper nests in trees and on buildings, while European hornets may nest in wall voids. Hornets are extremely aggressive when defending their nest and can mobilize the entire colony to attack.

Signs of Hornets

• Large gray paper nests
• Aggressive insects near nest
• Buzzing sounds in walls
• Hornets around exterior lights at night

Common Locations

Prevention Tips

• Regular exterior inspections
• Seal attic and soffit gaps
• Remove attracting food sources
• Professional early-season treatment

Wisconsin Climate Factors

• Colonies peak in late summer
• Warm falls extend aggressive period
• First hard freeze kills colonies

Seasonal Activity