In this study, the anti-L. monocytogenes EGDelux properties of a collection of 77 C. maltaromaticum strains were investigated by high throughput competition assays under varying conditions of co-culture inoculation level, inoculation delay between C. maltaromaticum and L. monocytogenes, pH, and NaCl, resulting in 1309 different combinations of C. maltaromaticum strains and culture conditions. Deferred growth inhibition assays were followed by halo measurements, and liquid co-cultures were followed by colony counting. Challenge tests in Camembert and Saint-Nectaire cheese were also carried out.