1 c regular Coca Cola (no diet) (thatch control)
1 c ammonia (use lemon scented if you want insect control)
1 c dishwashing soap (use lemon if you want insect control)
1 c antiseptic mouthwash (anti fungal)
1 can cheap beer (enzymes stimulate growth)
1 c liquid fertilizer
To really benefit plants, you have to supply the nutrients they need.
That is typically measured in POUNDS per acre, or pounds per 1000 sq ft
The small amount of material you're using doesn't contain enough of anything to provide any
real benefits when spread over 12,000 sq ft
http://www.neuse.ncsu.edu/LawnCare.htm
Fertilizer Rates
A typical lawn feeding is
1 lb. of nitrogen per 1000 square feet.
Here are some common lawn fertilizer formulations and the amount of each needed for 1 lb. of nitrogen:
10-10-10, 10 lbs.
You'd need 120 lbs of 10-10-10 on your 12,000 sq ft lawn to apply ONE lb of actual nitrogen/1000 sq ft, and 3 times that much for your yearly total