Hey everyone its awesome to hear people have been using milk and it working out for them. I have a similar method i use for pm that I've adapted from "Korean natural farming".
Basically you make a rice wash, which can contain million of different bacteria some good some bad. then here is where the milk comes in! you add your rice wash to whatever milk is avail, cow, goat, human (have yet to try but remember this is natural farming in places without refrigeration and often times electricity!), can even be evaporated dry milk!
basically by adding the dairy we are isolating the lacto b cultures most beneficial in protecting our gardens from mold, blights, etc. once you mix the rice wash and milk in a 5 gal bucket, (i usually do about 3 gals of organic whole milk from grocery to roughly 1qt rice wash) you cover it with a CLEAN tshirt
or even cheesecloth if you have it and let it sit for anywhere from 24-72hrs depending on the ambient room temp. once you remove the CLEAN tshirt you will notice a giant floating CHEESE LOG in your bucket! CONGRATULATIONS YOU'VE JUST MADE FARMERS CHEESE!!! this can be mixed with herbs and kept for human consumption (kind of like cottage cheese that you can press the water out of and make a paste and flavor to eat as a spread on some crustinis), or you can do as i do most often and feed it to your livestock your chickens even your dogs! The end goal being that you have strained said "cheese" from the remaining liquid. What you are left with is nothing short of gods gift to growers in serum form! It is pure lacto culture without the fatty residual of milk, all created and obtained from natural sources. You take your serum (i usually get about 2 3/4 gal left over) and put pour it back into your gallon jugs and store it in the fridge. if you have no fridge you mix your strained cheese free serum 1:1 with molasses. This technique has been proven to keep lacto culture serums potent and alive but dormant for years!!
I keep mine in the fridge and when i go to use it i will generally make a 5 gal batch to foliar spray. The ratio of serum to non clorinated water is 1:20!!! Same shit as serenade but doesnt smell like shit!
When you mix your lacto be sure to use clean ph'd non-clorinated water, and add 5ml or 1 tsp molasses per gal of h2o as a food source for your lacto culture.
This method was taught to me by an organic cannabis grower who managed greenhouses for cancer and aids/hiv patients, who need pure 100% organic mold free medicine. Under his supervision I knew of 5 patients who lost there battle to cancer and aids, but they had as much organic meds as they could consume until the very end.
Fuck spraying Eagle 20 and telling your patients or buyers that its "clean". I'm so sick of that dg2f grower mentality.
EDUCATE YOURSELF! You AND your garden are WORTH IT!
Happy growing to ALL!
ps i will drink a shot of serum 1-2x a month and my guts could digest a whole cow in a day, also mix it in with my chickens water and it keeps their chutes clean