Apples with extras

Is it too late to treat my 3 apple trees to try and stop them getting infested? Codling moth maggots and then earwigs destroy the majority of the hundreds of apples I get.

I haven't wrapped the trunks, sadly (found out that too late), can I spray them or anything, the flowers are just starting to fall.

I hate to have to throw away so many delicious apples.