They are starting to overtake my deck. It's not a huge issue, but they do work symbiotically with ants, and while I manage ever year to keep the ants out of my house, they are now also starting to go everywhere on my deck.

I've read there are chemical treatments, but I can also make a liquid dish detergent and water spray, hose down my deck, and it should kill them and clean off the sweet fluid they excrete that ants love. Sound ridiculous?