To fight the aphid attack on your roses, poke 3 holes as close to the roots as possible. The holes should be about six inches deep. Put two mothballs in each hole, cover and water. In about a week, all the aphids should be gone, and they will stay away the rest of the season says Lillian Hilburn, Orosi, California. From: 1,112 Down_to_earth Garden Secrets.