is there any difference between the Lesco pre-M's, ferts, etc..at Home depot versus a LESCO distribution center. are the home depot products less potent, less harmful for consumers? or is it exactly the same. i saw ROUNDUP Soper Concentrate, 1 gallon for $100, is that the same as what LESCO sells in their stores or is it less formulated? just wondering so i have a second place to get products. also, from your experiences, is home depot cheaper than lesco or bout the same?