You and everyone else Herb. I've owned an exterminating company since 1989 and yeah, ants are bad all of a sudden. I have learned one thing in 49 odd years experience... once you think that you know what any insect will do in a given situation, they will do something different. Hint, later in the summer and in the fall they are suckers for carbs, ie: sugar based baits. You don't want to use any bait that has too much active, you want a slow kill so they wont associate death with the bait. Maxforce or Combat (same product, different name) is good for when they want protein and they can change in a second. Sugar or protein are the two bases for any ant baits and sometimes it is best to put out several baits. I have had ant problems in homes where I had to put out some of every bait I could get in order to gain control.
Some ants can only b econtrolled with baits. You need to ID the ant. If you spray Pharoah ants they will go away for a few weeks and come back two to three times as bad. They are a tiny, amber colored ant. They will bud their clolny into several colonies if you spray them. Fire ants, find and treat the nest/mound. Get the cheapest liquid pesticide you can get, mix it weak and pour 1.5 to 2 gallons into each nest, all at once... or they will just move. If you bait fire ants never put the bait on the mound but scatter it around the mound.
Sometimes alternating sweet bait and protein bait around the house and then spraying Termidor/fipronil arund the perimeter will do the trick. Termidor is vert slow acting and the ants transfer it to each other wiping out the colony before they realize there is a problem.
Still, the best treatment is to find and kill the nest but don't hold back Fire ant nests can be three ft deep. Carpenter ants can have a main nest with 7 or more satellite nests but the main nest will have larvae, they only have one queen. Some ants have multiple queens. Carpenter ants also forage up to 100 yds from their nest.
So good luck. If you can't get contro try to figure out what kind of ant you have and maybe I can help. There are some pretty easy ways to tell under a little magnification... and it matters.
Julien