When using latex be sure that the temperature is above 50 degrees F. It is difficult for latex to form a film at lower temperatures. With solvent-borne paint, be sure the temperature is at least 5 degrees above the dew point. If it isn't, water may condense on the surface as it cools while the solvent evaporates, causing an uneven blushing effect.
Gas or electric yard trimmers, which is right for you? The answer is determined by what size yard you have. Electric trimmers are easier to maintain, but are limited to the length of an extension cord. Gas powered models have engines that must be fueled and properly maintained. However they will provide greater power that can be used without boundaries.