Old bottle of weed killer left in bed
Hi everyone. I haven’t attached a picture because it’s more soil /weedkiller related. I’ve recently moved into a new house, and outside the back door there’s a sort of triangle of bare earth between the garden wall and a short decorative wall. I’ve just been digging it out to plant some English ferns in there to cover the shady bare patch, and just assumed it was bare because it’s so shaded. But my fork hit a hollow thud. As I dug it out, I find it’s this huge container of weed killer (with my fresh fork holes but also clearly historic holes). I shook it carefully and it’s still sloshing so liquid left inside. It’s nothing fancy, just looks like a large garden centre variety weedkiller from what I can still see. No idea how old it is (what I can see of the remaining label looks modern, like at least fairly contemporary), or how long it’s been buried under there because the previous owners were elderly.
Just wondering on your opinions here, is this likely to have caused such a prolonged bare patch and what options do I have to remedy this if so? Is this a death sentence for that patch of soil? Thanks so much in advance.