what is the pokemon repel trick for shiny hunting in pokemon black and white?

Answer 1

Shiny pokemon are not obtainable by using repels.

Answer 2

Yes you woulsd just the pokemon ur using has to be the same level or lower then the pokemon u are looking for . EX) Eevee in casteila Garden in black 2 in dark grass are level 19 so if u bring a level 19 u will find only eevee cause its the only level 19 pokemon there . this trick is used to fliter out everything else in the area execpt for what u want also final thing u CANNOT use this trick to find lower level pokemon