I beat LUCARIO, but now I can't beat HEATRAN!!!

Well, the title explains it all. I bumped into another challange. I beat LUCARIO, in the Almia Castle, but now, I CAN'T beat HEATRAN in the Boyle Volcaino! (Strange names, are they not?) It keeps on making Magma Puddles! AND THEY WON'T GO AWAY LIKE WATER PUDDLES!!! They just sit there, bubbling, mocking me, as if they're saying, "Ha! You can't beat us, Pokemon Ranger!!!" I... HATE... MAGMA... PUDDLES... But it's SORTA funny, 'cause when HEATRAN makes them... it looks like he poops them...