Counties are trying everything possible to stop mosquitoes from spreading the West Nile Virus.
In certain parts of Allentown, the state Department of Environmental Protection is spraying to help control the mosquito population.
The hope is that this fine mist of spray will kill a lot of adult mosquitoes in Allentown -- mosquitoes that could be carrying the West Nile Virus.
"We've been doing surveillance for several months now and the areas that we're spraying tonight," said Louise Bugbee, West Nile coordinator for Lehigh County. "We collected a lot of positive mosquitoes in those areas."
Crews have been working around dusk because mosquitoes are more active during that time.
Parents with children outside feel that spraying should be taking place a lot later in the evening.
"Because most people are indoors, especially school age kids they're indoors," said Allentown resident Timothy Rivera.
"We're pretty much going where we're hoping there are not going to be any people and if we do see people on the street we'll turn the sprayer off," added Bugbee.
Spraying is only half the battle.
People still need to check around their homes and businesses for any kind of standing water.
"These mosquitoes tend to breed in little bits of water that people have around there own homes and gardens and yard," said Bugbee.
Crews are focused mainly in industrial areas that may have standing water on the property.
If you want more information on ways to fight the West Nile Virus, click here.