Proper urban sanitation is a costly, challenging, and labor-intensive endeavor and it is something that we face every day in Philadelphia as well as in cities all over the globe. Most large-scale automated tools for litter removal are too big to fit into pedestrian-centric areas, which means that these areas must still be cleaned by hand, increasing costs. Tergeo Tech addresses this problem by providing a semi-autonomous robot based on a modular and compartmentalized design. Our first robotic product can support litter removal by following a worker that removes litter from unreachable places that the robot then sweeps up, collects, and stores internally. Our modular design makes our robots easy to customize to fit various additional scenarios and customer needs with minimal changes in a cost-effective manner. This allows existing work forces to be more effective for minimal increases in operating costs.