Help.
In the 1999 War of the Roaches, I won by coating the floor under the fridge and the stove with a bottle of boric acid. Cleaned it up a couple weeks later, put down a new layer, and they were gone and stayed gone the rest of our tenure in that house.

New house, football players live next door, roaches clearly had the upper hand (even if the football team DID beat Kansas this year) and sent raiding parties to my house periodically. Football players moved out a few months ago, and the guerilla warfare escalated. The roaches are now in control in my house.

The strategy employed in the 1999 War won't work this time, because the nest is inside the door of the dishwasher.

I called an exterminator and found out what they charge, and the nontrivial inconvenience to us and our pets. I want to exhaust all other options first.