What should you do if you have an infestation of red hairy ants?
It sounds like you have an infestation of wingless wasps also known as Velvet Ants. Be careful as they have a very powerful sting. The following URL will get you to a page on the Velvet Ant and a method of removing them. http://www.pestproducts.com/velvet_ants.htm
'Fire ants' generally refer to ants in the genus Solenopsis, or Wasmannia auropunctata (the 'little fire ant'). 'Red ants' is a common name that is applied to a wide variety of red colored ants. It is occasionally used for 'red imported fire ants' (Solenopsis invicta), but also applied to red harvester ants, the 'European fire ant' (Myrmica rubra), and a number of other ant species. The usage is generally regional.
I believe what your are describing is actually a wingless wasp, often called 'cattle ants', 'cow ants', or 'velvet ants'. They are actually in the wasp family and vary in color from red to orange to yellow, one way to tell they are a wasp and not an ant is that they are 'hairy' and much larger then any typical ant (this answer assumes you live in the US).
Orange ants are also known as Pharoah ants, or sugar ants; these pests are not poisonous; however, they can harbor pathogens and harmful bacteria within their bodies and pass this on to humans or animals. These ants tend to infest in mass quantities, and controlling such as infestation can be difficult, as the insects themselves are extremely small. Often pest control from an experienced expert is necessary to control an infestation of sugar ants. These…
There are several thousand different types of ants around the world. Red ants are the second most common types of ants, they can be aggressive and are known to bite. Black ants also known as sugar ants, love anything sweet and will look for food wherever they smell it which can lead them to being in your house.