Just notice a nearby plant full of whiteflies and eggs.

[jash]

checked all plants in balcony yesterday and seemed all fine,but during this afternoon inspection i found that plant(kind of tall nightflower) infested of white monsters and huge ammounts of eggs,as soon as notice that the eggs remained attached under folliar decide to cut down and throw away every branch,sprayed the pot's soil with a light insecticide and after this will get rid of the soil also. searced all plants specially the same kind but didnt found anything.. i know that chlorine wash and spray with a common insecticide the area will help,but i have 5 more plants of the same kind as cover from the neighboors..should i worry for the flies and trash all other same kind plants quickly-