Using "PLA" Ripening Cullture for the first time.

[Mandalay]

I am wanting to use the PLA ripener and am new to it's use.  Is this usually added prior to rennet always or is it sprayed on the exterior of the cheese.
Which Cheeses would it be most widely used on?  Ones such as Tomme's?

[AnnDee]

It can be sprayed or added to washing brine. PLA is used for cheese that needs blinens, geo and yeast action like Reblochon, Morbier, Limburger...
I use it for my Reblochon, Morbier and St Paulin on regular basis, I love this culture!