[bllwnkl]

I bought some weed killer that is 43% glyphosate and the directions say to mix 7.4 oz in 1 to 10 gallons of water. I want to spray my gravel driveway, what would you recommend as the best ratio? Obviously if I mixed it in 10 gallons it would be 10 times weaker compared to mixing it in one gallon. The directions also states that you can mix 6 oz in 1 gallon for spot spraying. I will be using a 4-gallon backpack sprayer.