The only mix that ever made me nervous was 12 oz Oust and 10 lb Velpar DF. I washed everything out well and only used the sprayer for lawn fertilizations for quite a while after. Oust has quite a reputation for damaging plants in small amounts. Only vegetation tolerant is some grasses and conifers.
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
Benjamin Franklin 1775
Sell not virtue to purchase wealth, nor Liberty to purchase power.
Benjamin Franklin Poor Richard's Almanac1738