Sm90 Please Let Me Know How To Use It.

[Plzhelp me]

I am Korean. I'm not good at English. Please understand.
It's illegal, but it's raising marijuana.
Worms eat leaves. So I bought it. sm90
Please let me know how effective it is. I wonder how to use it.

 

[fatawa]

You can spray(very lightly)on canopy if you have bugs.to prevent bugs id mix it in the feed