Check with your county office of the Agriculture Commissioner or a local garden supply store for herbicides registered for use on strawberries in home gardens. You can use sawdust, bark, or black plastic mulch in the row to keep down weeds, conserve moisture, and keep fruit clean. However, mulches may lead to an increase in slugs. Mulch is particularly useful for hill-system plantings. Avoid covering the top of the crown or growing point of plants with sawdust or bark mulch.
Black plastic is very useful.
Clear plastic isn't as suitable - weeds grow underneath it. You can apply plastic most easily just before or just after planting. Before planting, place the plastic over the planting area or raised bed. Edges of plastic should overlap and be held down with soil. Cut circles with a diameter of 6 inches in the plastic where you'll set the plants.