Today I completed your one time flea treatment. I inspected all the areas of concern and found fleas in the two rooms where the cats were staying. I used a liquid residual application to treat all the accessible areas. Beyond the bedrooms there was a lot of clutter throughout the apartment. I highly recommend prioritizing sanitation to help eliminate the fleas. I then, used an aerosol application to knocked off whatever live activity was throughout the apartment. Allow 10-14 days to see best results. Thank you for choosing green pest solutions!!!