Tests evaluating spinosad, the first example of the naturalyte insect control class, on the codling moth were done utilizing drenches of red delicious apple. The methods used were as follows: In the ovicide test, the waxed paper egg sheet was drenched and pinned to an untreated apple. In the ovicide-larvicide test, the egg sheet was pinned to the apple and the egg sheet and the apple thoroughly drenched with the material. Finally in residual larvicidal testing, just the apple was drenched and the egg sheets pinned to the apple after drying, and after 7 days of ageing in a UV chamber. All the tests consisted of 2 replicates and had 6 rates with Guthion as the standard. All treatments were evaluated by counting established penetrations of the larvae approximately 10-14 days after infestation. Percent control was determined by comparing the numbers of penetrations in the treatment to the untreated check.