Sheryn’s recommended organic control for home orchards
Hang moth traps in the tree as soon as blossoms start to appear. Spray with a caterpillar biocontrol a week to 10 days after traps start catching adult moths or at 80% petal fall. Repeat in 10 days. Refresh traps and leave out to monitor for another generation later on in summer. Early season infection of the fruit is often by way of the catlyx and can be hard to see. However the caterpillar can be active inside the fruit as indicated by brown frass around the tell-tale hole. Removing and disposing of infected fruit can help control numbers.
Removing any fruit you find with tell-tale brown ‘frass’ around the entry hole helps to control numbers.