Microbiologic sampling of desks found 10 million microbes, and an average office contains 20,961 microbes per square inch. One of the worst offencers are telephones, which harbor up to 25,127 microbes per square inch. Also, computer mice and keyboards can support 1,676 and 3,295 microbes per square inch respecively. Gerba found that cleaning desks with disinfecting wipes reduced bacteria levels by 99%.
Note: Sporicidin® Disinfecting Solution, Spray and Towelettes (Wipes) provide 100% kill of of disease and odor causing oragnisms. They are fungicidal, bactericidal, virucidal and tuburculocidal.
Centers for Disease Control and Prevention (CDC) "Prevention Tips"