Wash, rinse, and repeat! An effective but very nefarious strategy! The more effective they are, ,the greater their pride in their "achievement"!

Nefarious:
ne·far·i·ous


ADJECTIVE
(typically of an action or activity) wicked or criminal.
"the nefarious activities of the organized-crime syndicates"
synonyms:
wicked · evil · iniquitous · sinful · nefarious · vile · foul · monstrous · shocking · outrageous · atrocious · abominable · reprehensible · hateful · detestable · despicable · odious