DRUG DESCRIPTION. PROSCAR (finasteride), a synthetic 4-azasteroid compound, is a specific inhibitor of steroid Type II 5Î±-reductase, an intracellular enzyme that converts the androgen testosterone into 5Î±- dihydrotestosterone (DHT). Finasteride is 4-azaandrost-1-ene-17-carboxamide, N-(1,1-dimethylethyl)-3-oxo-,(5Î±,17Ã)-.
1 The stronger and thicker you can get your lawn, the less chance violets will stand to spread. 2  Seed your lawn. 3  You can either over-seed during a core aeration or slice-seed areas to help them fill-in with new turfgrass.4  Stay on top of things. 5  It may take a couple years to really get a handle on a big crop of violets.ollow these basic principles to win the war on violets: 1  Use the right herbicides. 2  Create an environment that is best for your lawn. 3  Fill in the thin or bare areas. 4  Stay on top of things.
1 Sweep your lawn area regularly to get rid of lawn sticker burs, especially if you have a lawn sticker infestation. 2  Clean your tires and the the underside of your shoes after going through a weed-infested path, especially during the summer. 3  Don't borrow garden tools.eeds typically love growing in poor, unhealthy soil. After pulling out your lawn stickers, apply fertilizer to the soil to make it healthier. Some sources say that putting sugar in unhealthy patches of soil and watering it in will also make soil more fertile and unfriendlier to weeds. Herbicides.