Answer:
I remember back in high school I conducted an experiment involving two Petri-dishes. Both had swabs from my kitchen sink (a lot of bacteria). The difference was that I used Lysol versus Clorox.
Explanation:
You can start here. Secondly, formulate a good hypothesis and test it. For example, you can say I believe Lysol works better than "X-Brand" or "Y-Brand".
Then list the results.
I hope this helps.