Wash pm in late flower

What is your favorite way to wash pm off in late flower? Not really trying to kill it. I'm just trying to make it not visible and control it in the last week of flowering. Potassium bicarbonate? Home made green clean (oil, alcohol, soap)? Peroxide?

I was thinking peroxide and home made green clean mixed together. How much? I have had great luck with it, but i cant find my recipe

I’ve read that diluted milk is good at treating PM. Pumpkin growers use it.

https://www.growveg.com/guides/using-milk-to-prevent-powdery-mildew/