Living in the tropics, we are often plagued with unsightly
and dangerous moss and algae growing on driveways and pathways around our homes. When the rain stops, the green growth will
dry up but will regenerate again with the next rain.
There are many different products on the market to help you
clean up the driveway. 
Look at the active ingredients on the label; most products
will contain bleach, copper, or soap. Be sure to follow the directions on the
label. Most are sprayed on, left for a
while and then washed off with a hose – sometimes with the help of a
shovel-scrapper. Often times the buildup
is so great that a power washer is needed. Bleach is often recommended at one cup
per gallon of water.
Look at the active ingredients on the label; most products
will contain bleach, copper, or soap. Be sure to follow the directions on the
label. Most are sprayed on, left for a
while and then washed off with a hose – sometimes with the help of a
shovel-scrapper. Often times the buildup
is so great that a power washer is needed. Bleach is often recommended at one cup
per gallon of water.
When using copper and bleach, there is always the potential
for these products damaging desired plants either from the direct spray or from
the solution saturating the soil. Take caution when spraying near desirable
plants. The damage is lessened in high rainfall areas through the leeching
action of the rain.
Another option is to use one cup of vinegar per gallon of
water; bleach is sometimes added to fortify the solution. I have not had any feedback on how well the
soaps and vinegar work.
