The asiatic brown beetles, they feed at night as do the earwigs. I go out after dark with one of those headlamps and a red cup with about a half inch of water and eight drops of any dishwashing detergent. That surfactant action kills them quickly and they do not escape the surface tension of the water. I'll put the cup below any one of the beatles (not Ringo though) and a little tap with the other hand on the leaf with the beetle on it with a little practice I can get 50 for 50 in the cup. Their instinct is to drop straight down from where they are when threatened use this to your advantage. On the first night I get about 50, 30 on the second night, maybe 15 the next time and last night 4. Keep at it you will see results and you will see beautiful new growth without the chewing damage. I love neem oil I use it for flea Beatles it doesn't seem to affect the above. For the green Japanese beetles, I get them the same way in the day. I hate to admit this but it's very satisfying to watch them squirm in their pool of death. If you saw the damage they do in my garden you'd agree with me.