I actually like using canned evaporated milk. I mix 1 can to 1 can water. The resulting mix is then cut 1 to 1 with water…that’s spray ready.
But I only use milk outside while in flower, everything inside was sulfured a while ago and I’ve never seen PM inside again.
Thanks Joe!!! 
edit in… One thing about using milk is that it needs to go on early with at least 4-5 hours of sun/light after application.
Do plan on washing your bud if you use milk and you’ll see why after you do it 