defog is no longer a hm move but if you want to get rid of it go to the place with fog on your birthday
Chat with our AI personalities
there is no defog in pokemon black/white
you have to go to pokemon team and then select the pokemon which knows defgog and then you see the word defog select that and then go to the place where you wantto defog and then the fog will go.
defog is not in emerald,
teach a flying Pokemon defog and use it
I suggest you bring a Pokemon that has the move defog,and then use defog to see better while in the cave.