I haven't bought my tree yet and the smaller tree for the study is now out of the loft, but not out of the box. Both will be dealt with around the 12th or 13th December.
Garlic water twice a week for me at the moment, Monday and Tuesday. ACV water twice a week, Wednesday and Thursday. Clear water Friday, Saturday and Sunday.
Ever so slightly acidic and the bad bugs do not like an acidic environment. It may not be acidic enough to make ant difference, but it is a natural product and the main point is, it makes the fanciers feel better.