Board Thread:Questions and Answers/@comment-1757231-20130804112733/@comment-3075738-20130804121030

Soft Contruction Foam does suffocate, however people are able to walk through it. If you could spray then sand the CF very quickly, it may work.

You can walk through soft CF, but it's designed to push players and entities out of it.

If you're aiming to kill players with high grade armor, there's a high chance the player also has an RM pickaxe or something of that nature to quickly take away the hard CF. Soft CF breaks by hand instantly