But what I have noticed makes the biggest difference in fighting contaminations is the amount of colonized mycelium jars you use and how much spawn to turn it to. 1 jar will not make 1 monotub. Since it is a race vs the mycelium and contams, you need more mycelium on your side. I usually have about 3-4 quart sized jars that are half filled with colonized wbs which I mix with each monotub.
Also, just to be more safe, make use of Hydrogen peroxide (H2O2) in your misting bottles. I use a lot, but see others use minimal. It evaporates into H2O so you won't be getting chemical residues on your fruits. And also it helps me think that I am doing the best that I can to fight these contams.