By the use of 'drug withdrawal periods' before slaughter or the use of milk or eggs from treated animals, veterinarians and animal owners ensure that the meat, milk and eggs is safe and free of any contamination.[95] However, some countries have also banned or heavily controlled routine use of antibiotics for growth stimulation or the preventative control of disease arising from deficiencies in management or facilities. This is not over concerns about residues, but about the growth of antibiotic resistance.