The heavily cratered face of Mercury and the Moon bears mute testimony to the flux of smaller objects that bombarded the inner solar system in the first billion years after the sun formed. A significant fraction of these bodies likely struck the sun, slightly altering its surface abundances of heavy elements. Stellar pollution of this sort can be detected by looking at metallicities of carefully selected populations of stars of varying mass, e.g., in moderate age clusters, by searching for specific patterns in relative abundances in individual stars, or by looking for isotopic anomalies such as 6Li. I describe the current state of such studies.