When to Spray Herbicides on Clover?

Have an existing clover plot that I reseeded in Feb. I have Clethodim for grasses and Butyrac 200 for grasses. When the best time (how long after germination or clover height?) to spray after the new seeding come up and what concentrations? The concentrations I have seen are Clethodim 16oz/25 gallons plus 1/2 cup dish soap for grass and Butyrac 200 .3oz/gallon plus surfactant. Are these correct??

Thanks for all the help.

 

I follow the label instructions, and the spray needs to be applied to the grass blades so you need to wait till the grass is up and starting to grow.