A measure of queen mating control at an apiary is the number of matings with managed drones expressed as a percentage of total matings (managed and feral drones). In Texas, USA, using cordovan queens and drones for tests in July, it was found that at a commercial apiary near other apiaries 93% of all matings were with managed drones. At an isolated (outlying) apiary, the figure was 83%. It is estimated that in April-May, when most queens are produced in this area, mating control would be 96-98% and 93-96% respectively. It is concluded that 90-95% is a realistic level for mating control and that most queen producers will be able to achieve this without modifying their methods. It is predicted that genetic material from Africanized bees, after rigorous screening and selection, will be used to improve stock. It is suggested that a new name is needed for tolerable bees that are partially Africanized.