Emergency management officials are estimating the floodwaters from Hurricane Harvey will create a cleanup effort that could linger for years.Employees at Serenity Thrift want to send help now and are using the store at Northgate Center as a drop-off point for much-needed personal care items. Donations are being accepted during regular Serenity Thrift business hours Monday thru Saturday from 9 a.m. to 6 p.m., with the store closing at 5 p.m. on Wednesdays.“We’ve already sent one truck,” said Serenity Thrift manager Kathy Hill. “We’d like to send a truck every day if we can get it filled with enough donations.