Why do mosquitoes love happy hour?

Who doesn’t love happy hour?  It marks the end of a workday, a time to unwind from the day’s stressors.  If you revel in an outdoor after-work cocktail, you are not alone.  Beings of the non-human sort are well-known cocktail hour party crash artists.  Who knew that tipping a cocktail or two outdoors on your deck or outdoor living patio space could spell trouble for yourself and your revelers?