i use the greasy gray thing that i was gifted from God:

Matthew 7:15-20

King James Version

15 Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.

16 Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?

17 Even so every good tree bringeth forth good fruit; but a corrupt tree bringeth forth evil fruit.

18 A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit.

19 Every tree that bringeth not forth good fruit is hewn down, and cast into the fire.

20 Wherefore by their fruits ye shall know them.

in case you don't understand what that is saying, it is that false things make false shit that you can use to recognise it is false