of course it's not possible that they homeless guy isn't capable of such tasks - that he's mentally incapable or physically incapable
but, of course if he is - then, there's still a big problem
personally, I'd love to see you employ homeless guys -------------- but, I'll bet london to a ton of shit that you would never walk up to a homeless bloke in the street - bend down and ask him - 'hey mate, how about coming to my house and mowing my lawn - I'll pay you 50 bucks'
yeah right - I can see you doing that ---------------- probably make a lifelong hobby out of it eh?
get a couple of them to paint the inside of the house for you as well