Three local law enforcement agencies will hold “take back” events Saturday in efforts to rid homes of old, expired, unused, unwanted and potentially dangerous prescription drugs.

Sheriff’s offices in Charleston, Dorchester and Berkeley counties, with the aid of the Drug Enforcement Administration, will be accepting prescription drugs -- no questions asked -- from 10 a.m. to 2 p.m. Saturday.

-- In Charleston County, medications for disposal can be brought to the front lobby of the Sheriff’s Office at 3505 Pinehaven Drive in North Charleston.

-- In Berkeley County, take medications to either the Sheriff’s Office at 223 North Live Oak Drive in Moncks Corner; or the Goose Creek Magistrate’s Office at 303-B Goose Creek Boulevard.

-- In Dorchester County, Bring medications to sheriff’s offices at 212 Deming Way in Summerville or 101 Ridge St in St. George.

The service is free and anonymous, authorities said.

Last October, Americans turned in 377,080 pounds — 188.5 tons — of prescription drugs at over 5,300 sites operated by the DEA and nearly 4,000 state and local law enforcement partners. In its three previous Take Back events, DEA and its partners took in almost a million pounds — nearly 500 tons — of pills.