We had been battling dandelions for years without much success. Our lawn was more yellow than green. Last year, we decided to give Ullrich a try after seeing them in our park. We had three applications last summer and one so far this year. The improvement is phenomenal! Our lawn is lush and dandelion free for the first time! I can't say enough about how pleased we are. Even our neighbors are in awe of the change. I highly recommend Ullrich to anyone experiencing lawn problems.