Coconut vendors in the Warrens area have been warned to keep their work areas clean, as their representative promises to back the strong responses by the authorities against any vendors, who continue to create health challenges for neighbouring businesses.During a visit to the area near the Everton Weekes roundabout on Monday, Ministry of Health officials along with personnel from the Sanitation Service Authority (SSA) removed discarded coconut shells and other refuse from the site, in an effort to address growing environmental concerns.SSA Public Relations Officer Carl Padmore, said the Ministry of Health had given notice to some vendors who operate in the area to clean their surroundings, as rodents and mosquitoes had become a problem.