Japanese brainwash advertising

This commercial is for a insecticide. It used a brainwash ways. Look! There is an uncle behind these two girls. He said " Ah!" After these two girls sing one lyric. These two girls sing "There are dust mites in the chest, why don' t know early. Gong, Gong, Gong, Gong. It' s next to the beautiful clothes. It can give birth to little dust mites. Gong, Gong, Gong, Gong". Then repeat and repeat. " Gong, Gong, Gong, Gong" and the Uncle's " Ah" It' s onomatopoeia. 

Use the repeat way! Ask people laugh and remember.