1. Toilet bowl: 3.2 million bacteria/square inch
2. Kitchen drain: 567,845 bacteria/square inch
3. Sponge or counter-wiping cloth: 134,630 bacteria/square inch
4. Bathtub, near drain: 119,468 bacteria/square inch
5. Kitchen sink, near drain: 17,964 bacteria/square inch
6. Kitchen faucet handle: 13,227 bacteria/square inch
7. Bathroom faucet handle: 6,267 bacteria/square inch
8. Bathroom sink, near drain: 2,733 bacteria/square inch
9. Pet food dish, inside rim: 2,110 bacteria/square inch
10. Kitchen floor, in front of sink: 830 bacteria/square inch
11. Toilet floor, in front of toilet: 764 bacteria/square inch
12. Kitchen countertop: 488 bacteria/square inch
13. Bathroom countertop: 452 bacteria/square inch
14. Garbage bin: 411 bacteria/square inch
15. Dish towel: 408 bacteria/square inch
16. Toy: 345 bacteria/square inch
17. Kitchen tabletop: 344 bacteria/square inch
18. Home office phone or refrigerator door: 319 bacteria/square inch
19. Toilet seat: 295 bacteria/square inch
20. Bathroom light switch: 217 bacteria/square inch
21. Microwave buttons: 214 bacteria/square inch
22. Kitchen chopping board: 194 bacteria/square inch
23. Child-training potty: 191 bacteria/square inch
24. Infant changing mat and infant high chair: 190 bacteria/square inch
25. Kitchen phone: 133 bacteria/square inch
26. Bathroom door's inside handle: 121 bacteria/square inch
27. Toilet's flush handle: 83 bacteria/square inch
28. TV remote control: 70 bacteria/square inch
29. Home office computer keyboard: 64 bacteria/square inch
30. Home office computer mouse: 50 bacteria/square inch.
sumber
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