Hey guys, was spraying some roundup on fence rows and I always mix 2 Oz per 10 gal of water. Someone told me they always double the amount of chemical to " get a good kill". I said your wasting chemical because if you burn the plant or weed it won’t absorb and kill the root. And besides that there’s a point where the chemical is as strong as it will be in your mixture. So am I right about this? What’s y’all’s opinion and what’s your mix ratio if you use this product?