National Prescription Take Back Program The Burnet County Sheriff's Office, located at 1601 E. Polk St., Burnet, will be taking in prescriptions from 10:00 a.m. to 2:00 p.m on Sat., April 28. Lakes Area Health Mart, located at 608 Buchanan Dr., Burnet, will be open 8:00 a.m. to 1:00 p.m.