Solenopsis molesta  ants or thief ants get their name because of their thieving ways off of larger ant colonies. They steal food from the nests of these other colonies instead gathering the food for themselves. (Texas A&M University, 2010). Workers are often observed taking and carrying food from other species (Hayes, 1920).Some of the nests of the species Solenopsis molesta are thought to be connected to nests of other ant species which makes it easier for the thief ants to steal food (Hayes,1920). 
A common mistake that is made when classifying the thief ant is that they are often mistaken for the Pharoah ant (University of Nebraska, 2013). It is a common occurrence for thief ants to be confused with other species of ants like this species of monomorium pharaonis (Pharoah ant) (Hayes, 1920). This species is also known as the red house ant and they are confused with the thief ants because they have similar coloration (Hayes, 1920). 
Like we have mentioned in our habitat section, some of the victims of the thief ant include:
-Cotton boll weevil
- Ladybird beetle
- White- marked tussock moth
- Hessian Fly
In certain situations, a defenseless insect or animal may fall victim to the Solenopsis molesta (Say) species (Hayes, 1920).
Solenopsis molesta ants interact highly with humans, as they are pests in the home. Due to their small size, they have an advantage at getting into hard to reach places in the home, like cabinets (Hayes,1920). Not only do the thief ants terrorize humans by scavenging for food in homes, thief ants also eat the valuable crops of farmers (McColloch and Hayes, 1916). Thief ants tend to be more detrimental to the fields of farmers than to the home (Hayes, 1920). The reason that thief ants are so successful at damaging crops is because of their small size that allows them to eat crops undiscovered (Hayes, 1920). One crop that is often damaged by thief ants is corn (Hayes,1920).  Find more about this interesting interaction with farmers in our nutrition section! However, one positive interaction with humans and thief ants are that the thief ants are predators to many other pests that inhabit homes and damage crops (Hayes, 1920). Since thief ants eat meat, they are likely to eat dying or wounded species of insects independent of which specific species it is (Hayes, 1920).
 While thief ants (Sat) victimize countless other species, the ants of Solenopsis molesta sometimes fall victim themselves. Their enemies include spiders, horned-toads, and mites (McColloch and Hayes, 1916). Birds also often eat thief ants (Hayes, 1920). There are two ant species that have been found to feed on ants from the species Solenopsis molesta. These species include Cremastogaster lineolata (Say) and Pheidole pilifera (McColloch and Hayes, 1916).
Within their own colonies there are less worker thief ants than there are normally in other ant colonies due to the presence of multiple queens (Hayes, 1920). Thief ants have also been known for feeding on their own eggs and larva (Hayes,1920).