The triatomines are vectors of Trypanosoma cruzi (Chagas, 1909), the etiologic agent of Chagas disease. All species are strictly hematophagous, and the hosts used by vector species are important to understand the transmission dynamics of T. cruzi, and eventually, for the development of effective control strategies in endemic countries. In the current review, we gather a comprehensively number of literature reporting triatomine feeding sources, using rigorous targeted search of scientific publications, which includes research papers and reviews to put together the most recent findings of the feeding behavior in triatomines and their applications for vector control of Chagas disease. Our main findings suggest that the main feeding source in triatomines is the human blood (22.75%), T. dimidiata (Latreille, 1811) (Hemiptera: Reduviidae) is the most frequent (13.68%) triatomine species in this type of study, and most of the studies on feeding sources (47.5%) are conducted in the domestic and peri-domestic environment.