What, they gave up trying to take the boat ride to Italy?
Send ‘em back. Period. Here’s your cheeseburger, 4 candy bars, some goat jerky, 2 gallons of vitamin water, some toilet paper, a plastic tarp, and a small poly blanket. Oh and an multi-inoculation and a big shot of penicillin. Food, clothing, shelter, medicine, sanitation. Now get lost.
You are much too generous - give them nothing - strip them nekked and put them on the other side of the fence - tell them - the next time - it’s shoot to kill.
And then do it.
Wardmom has it right. Drew, all that stuff you suggest will be sold by them and they’ll be back for more. Wardmom’s solution would work. Especially the “shoot” part and you’d only have to do it once.