Photo attached. Re previous discussions & threads about vinegar for weed control. I recently bought Allen's Double Strength (10%) Cleaning Vinegar in 2.5L bottles at Coopers (Save-On Group) in the Okanagan. So this stuff is out there - some places. 10% acetic acid seems to be a recommendation for weed control on some websites & in some books. Adding detergent is mentioned also. Note: Acetic acid is not, as far as I am aware, officially sanctioned as a weed killer in BC. Take care, use your own judgement & the experience of others. Note: My elementary chemistry tells me not to mix this with anything basic (alkaline) or containing "bleach" chemicals. You will produce gaseous CO2 with the former & possibly a toxic gas with the latter.