how can I keep my face clear of acne?

[#1]

I use ProActiv, I usually don't do it on a daily basis ( 2 times per day, all 3 steps in the morning & again before bed) i usally do it at night. Well is there any other way of getting my face clear, without having to use ProActiv? Maybe any suggestions for common household materials?

[#2]

Just to clarify about lemon...I use an actual fresh lemon wedge/slice. If I add brown sugar to piece of lemon I gently exfoliate. Easy circular motion. My apologies for any misunderstandings. I use a wedge or two as to not over indulge in lemons amazing properties. Garlic, as well as honey are great anti bacteriological agents for acne prone skin.