Okay, you can use the bacteria wipe to scrub one, and then a randomizer decides if it dies. You know you've hurt one if it turns pink. You can press space to spray everywhere. FYI: The promise that chemical bottles have to kill %99.99 of germs, well I took that in consideration. The spray doesn't hurt %99.99 but they do hurt a close %99. You can click the Barsley, the screen, or the cloth to add a bacteria. Adjusting the bacteria rate will increase or decrease the chance of a bacteria being born. FWI: The more bacteria, the faster they'll reproduce. The bacteria max is for if you only want a certain amount. Reproduce? is for if you want them to not make more bacteria. If you find you are simply hurting the bacteria too much, you can press 0 to put away or equip the wipe. On my computer, I find a bacteria rate of 213 and max of 144 to be a good place to set the bars so your computer doesn't lag up.
The only credit goes to my teacher for having us study cells and giving me this idea. Also, if you know a way I can make this better, please let me know.