YOU WILL NEED:
_a very fast Pokémon level 40 or more that knows Spider Web(like Ariados),Mean Look(as Golbat and Crobat),or Block.Is better that you give Rapid Claw at this Pokémon;
_A Pokémon level 40 or more that knows a paralyzing move (like Thunder Wave or Stun Spore);
_A Pokémon level 40+ that knows False Swipe (like Sneasel,Weavile,Scyther and Scizor);
_Max Repellents,Ultraballs,Timerballs,Darkballs,and,ifyou want,Weightballs.
AN ADVICE:do this part in the evening,you will have more catch rating and luck with the Darkballs!!
1)Go to a city,I suggest New Bark Town,because has only one near...