Mould Killer aka Kabi Killer

It's still very hot and scorching in Japan. Last weekend and this weekend I've been cleaning our room, bath room and toilet with my wife as well as plenty of washings needed to be hanged dry outside. There's lots of mould especially on the walls and bathroom ceiling. So I had to bring this Mould Killer and spray it all over it. It was horrible because while I'm scrubbing and scraping the mould with a brush, Mould Killer bleach creates this toxic gas and made me feel sick and dizzy. It was awful but in the end my hard work payed off and everything is clean...