Garden pest

[black nijna]

How bad is the asiatic beetle grub in the garden for veg

[veggiechicken]

Three questions that need answering first:-
Do you have it in your garden?
If so - are you sure that's what it is?
Where do you live?

[Zelenina]

It seems to be only a serious problem in parts of the USA. I don't think it exists in Europe at all. Here's some info about it https://extension.unh.edu/resources/...542_Rep564.pdf

[veggiechicken]

^^^ That's why I asked where Black Nijna lives