Yes. Buy a 40 dollar garden duster. It allows you to mist the underside of the leaves much more easily.
Personally; I hate neem oil. Personal choice. Despite claims to the contrary; You have to rinse the plant really well at finish or have some nasty tasting weed.
Only apply neem oil to leaves. Same with DE. Try to keep from getting too much powder in the buds
You can also use canola oil all the way up till Harvest without any harsh taste or ill effects but would also recommend to wash if you had to use it all the way up till harvestā¦
1 1/2 ozās of canola oil and 5 drops of dawn dish soap to a gallon of water for minor infestation and for a bad infestation 2 1/2 ozās of oil and 5 drops of dawn dish soapā¦ you can use pure neem oil also the same way at same levelsā¦
For heavy infestation spray every 3 days and every other week for preventive measures and only when lights out or at night if your outdoorsā¦