Locating Insect entry

From Noelville:  Is there anyway to find out where insects are getting into the house. Every year we are infested with house flies, ladybugs and mosquitoes. They have to be getting in somewhere. Can a Pest Control company find out how they are getting in so we can can fix it?

Short of hermetically sealing one’s home, it is nearly impossible to keep all uninvited ‘guests’ from dropping in for a visit.  You can minimize their intrusions by ensuring that all doors and windows fit tightly and if opened for ventilation, have tight-fitting screens. Any gaps between their frames and the house structure should be filled, as well as any cracks in the foundation. If any pipes, vents (such as from a clothes dryer), etc. penetrate a wall, any gaps around those should be filled with caulking or expandable foam.