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.
You can also find a little more room for shade plants to add interest to the mulch circle. Step 2. Remove The Grass The fastest and easiest way to get rid of the grass around your tree is to spray it with Round UpÂ® Weed & Grass Killer.If you have a large area to treat and own a tank sprayer, you might want to use economical RoundupÂ® Weed & Grass Killer Concentrate Plus.ou can also find a little more room for shade plants to add interest to the mulch circle. Step 2. Remove The Grass The fastest and easiest way to get rid of the grass around your tree is to spray it with Round UpÂ® Weed & Grass Killer.