The San Ysidro School Board and Sunset Elementary School in San Ysidro, CA have begun a marketing campaign to find sponsors to foot the bill for a wireless surveillance service from SensorWave Technology to monitor the school grounds. The school, which is about a mile from a United States-Mexico border crossing south of San Diego, has become an after-hours haven for alcohol consumption, drugs, and prostitution, activities that leave behind school yard flotsam such as bottles, drug paraphernalia, and graffiti.