Ant Attack: Flamethrower edition

My 2018 Pizza Jam submission. Based on title of the game Ant Attack The radioactive ants, for some reason, want to destroy your clients house. You must prevent them from doing so! You have a flamethrower, dont burn the house or it will... burn. Left click to fire. You also have grenades, but they dont affect the house because the owners bought an Grenade-Proof Supercharged Wall Coating 9000™. Right click to launch. Can you save the house and limit the damage cost ? Music/Graphics/Programming : M...