Shrews (Sorex spp.) have not been well studied, partly because they are difficult to capture and can die quickly due to their fast metabolism, high protein needs, and small body mass. There are two species of Sorex that are of conservation concern in the San Francisco Bay: salt-marsh vagrant shrew and Suisun wandering shrew. Aside from some documentation on the California Natural Diversity Database, there is sparse research on population densities, movements, or presence of these species. A novel method of collecting fecal samples recently developed for detection of salt marsh harvest mouse (SMHM) DNA has also been used to collect fecal samples from other small mammals to genetically identify presence. We partnered with land owners to identify the potential presence of SMHM and shrews within Suisun Bay. We used bait stations to passively collect feces. Then, we used previously developed genetic analyses to identify rodents and developed a new set of DNA primers to detect the presence of shrews in the pooled sample. We identified the presence of shrews across three sites. The results demonstrate the effectiveness of our method for surveying shrews and has potential to positively impact shrew conservation efforts by enabling safe and effective population monitoring.