Board Thread:General Discussion/@comment-24501117-20140204025313/@comment-24826500-20141017093402

9-Inch Nails only work against Frozen Bloons. However, I think Cleansing Foam might work. So I think it should be immune to Foam as well.

To all blimp idea makers: One thing with blimp conceptions is that the bloons and their health are getting way to OP so that no tower will manage to pop it, even maxed TOTMGs or TOTVMs. So unless you're about to make conceptions on additional Tier 5 upgrades, I advise you consider the poppability and freeplay health/speed increases. I don't mean to criticize all those blimps (some of them have good ideas), but some are seriously overpowered.