Let's see ... 5 guys, 12 hours ... that requires more cash than I'd want to carry around, or want to pay out without having a paper trail. Heck, the dump fee alone was likely more than I'm likely to have in cash on hand,
Credit / debit card? Darn few contractors have the ability to take them. At their scale of business, card processing fees are absurd.
Money order? Apart from the cost, we're up against the $500 limit to them, and the need to get them ahead of time.
Payment in kind? Sorry, I'm fresh out of goats and chickens

.
Nope. I simply dropped the ball. It's pretty rare for me to use a check these days, and I got caught unprepared.
Have to admit it is kind of funny, in hindsight!