About 2 weeks ago Dr. Earth lawn fertilizer was on sale at my local Home Depot.. originally it was $45 a bag.. Then it was $35.. Then $29. today it was only $19 after reading the ingredients.. it really looks like it's good organic stuff. Has anybody had good results with this??? I believe it was only for 2k square feet so I could see how it can be very expensive for the average user. it also had a expiration date but it was not stamped on.. could it be that it was expired does that happen??? I live in Northern California Home Depot never puts anything on sale for more than 20% off..