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 If you have a larger lawn, you can get a dethatching blade for your lawn mower. 2  Set the height adjustment so that the tines can touch the surface of the soil, but if you set it too low, you will also remove your grass. 3  Dethatch your entire lawn using this method and dispose of the moss you remove.s a result, the grass can die off and moss can grow in its place. Regular aeration can help control and prevent this. 1  Rent, borrow, or buy a core aerator machine to get the job done. 2  This machine pushes a set of hollow tines into the lawn, digging out small batches of soil less than 1 inch (2.5 cm) wide.