Wild fermentation?

[ComcastWineRookie]

So...... I didn't have yeast to add to 10 of my 15 gallons of saison till tonight. I went to add and there is airlock activity coming out of both air locks, pretty vigorous for zero yeast. Did I pick up some wild yeast? Should I be worried? Thanks.

 

[pdxal]

Yep, likely unintended yeast or bacteria fermenting.