Unlike bears and cheek-kissing aunts, mosquitoes are sneaky attackers that often go undetected before they strike. Purge pests from your backyard battlefield before they ambush you with today's Groupon: for $69, you get up to a half acre of administered Barrier Mosquito Spray (a $139 value) from Mosquito Terminators. Areas larger than half an acre can be sprayed for $20 per additional half acre.

Mosquito Terminators' state-registered technicians will come to your grassy backyard, rooftop grass, or field of overturned canoes all agrow with grass and assess the property. They'll then apply a defensive shield around your yard with the barrier spray. This process works by using an environmentally safe, all-natural insecticide approved by state and federal mosquito-control agencies. Although non-toxic, this effective spray immediately deters and kills any mosquitoes, gnats, ticks, fleas, and biting black flies that enter your yard, and it will continue to have a 21–45 day residual effectiveness against midsummer bugs (depending on the weather). Service is available Monday through Friday and occasional Saturdays; call ahead to schedule an appointment.