I have a miniture Discovery eating apple tree in the garden and every year the fruit is attacked by the larva of, I believe, the codling moth (may be wrong). The fruit this year is all affected by small holes in the apple and a small larva inside. I have tried putting a net over the tree and also spraying in years gone by. I am now at the point of taking a hatchet to the tree and getting rid of it as I have yet to have a decent apple off it - always have to cut parts off before eating. Any suggestions in curing the problem prior to the hatchet would be much appreciated.