blow into the mic (microphone)just above the bottom screen of the Nintendo ds when the fire trap appears underground if this does not work your mic is broken,faulty or too or not sensitive enough :)
for 2-5 turns
Blow into the Mic on your DS to blow the petals away.
You literally blow on it.
Trapinch and Diglett/Dugtrio are the ones who have it however keep in mind that the Arena Trap ability does not work against flying-types and Pokémon with the Levitate ability.
hold down your finger on the mic hole and wala the fire goes away!
for 2-5 turns
Use a Pokemon with mean look, or use a Pokemon with a trap ability.
Blow into the Mic on your DS to blow the petals away.
You literally blow on it.
Trapinch and Diglett/Dugtrio are the ones who have it however keep in mind that the Arena Trap ability does not work against flying-types and Pokémon with the Levitate ability.
get a Pokemon like wobbufet with the ability shadow tag, then you can corner it and capture it. arena trap ability works too
hold down your finger on the mic hole and wala the fire goes away!
Blow into the MIC of the Nintendo DS. This simulates the leaves being 'blown' away.
if you mean vanish as in flee like mesprit, cresselia, moltres zapdos and articuno, its because they are supposed to do that and they do that in platinum and diamond too. you can only get moltres zapdos and articuno in platinum. to stop them from fleeing, you should have masterballs or a TRAPINCH in your first slot but you cant switch out because it knows sand trap or whatever its called to stop Pokemon from fleeing or have a haunter or any ghost Pokemon that knows mean look or a sudowoodo that knows block and USE those moves IMMEDIATELY when you see them. hope i helped! :)
You blow on the dsi, i'm not sure if a ds can recognize wind on pokemon diamond or not.
To get a secret base underground, talk to a trap trader or finish some of the underground man's challenges.
There are no items that stop Pokemon from fleeing in battle in Pokemon soulsilver.Although this is true:You can catch a Pokemon that knows, Arena trap,and/or a Pokemon that knows mean look, such as a Ghastly.