Reduces meth helpers to atoms.

Filters meth helpers messages.
It doesn't block your own messages.
There is a menu under Options → Mod Options → Anti Meth Helper where you can customize which languages to block.

BeardLib for auto-updates.
See the images for more details.
Extract to mods folder.

Mods it fully blocks (total 8):

Mod that does everything that meth helpers do but better and doesn't spam other players chat (made by me)