Well I know the above title of this topic is obvious, but I was just using some Black Flag ant spray and the spray cap was a bit loose so it kept leaking on my fingers. Now my fingers are quite stiff and ache, I had no idea ant poison could soak though the skin and do this, but I'm sure it will be fine tomorrow. So be wise and if your poison leaks, wear nonporous gloves; don't be a dumb ass like I was.