Manteca Unified campuses aren’t infested with drugs if the district is compared to other school systems of similar size or even some nearby districts.But that isn’t enough for the Manteca Unified board. They want to turn up the pressure to make campuses as safe as possible.The board Tuesday voted to expand a contract with Canine Detection Services by $12,000. Instead of primarily using the dogs to sniff out drugs when students are suspected of having them, the district will deploy the highly trained dogs and their handlers for random campus visits.“Hopefully, students knowing that we are doing random sweeps will serve as a big deterrent,” said District Superintendent Jason Messer.Messer has pointed out possession and use of drugs and alcohol in many cases under the law now have a more severe consequences for a young person when it occurs on a school campus than it does in the general public.