"Moeru gomi" means "burnable rubbish" when written with the usual kanji 「燃えるゴミ」. But "moe" written with the character「萌え」 is a slang word for otaku-like fetishes so this company has come up with new "moeru gomi"「萌えるゴミ」bins. You can pre-order here. It's not a new pun. Akibablog spotted the slogan on these T-shirts in Shimokitazawa a few months back:
