How to do ants extermination?

In UK you don't see ants here.But back home in Bangladesh they are almost everywhere.In case if you see ants in here don't panic , there is solution for that.I searched the internet gathered all the tips .

Use dish soap and water. Fill a water bottle with one part dish soap and two parts water, then shake it up to mix the solution thoroughly. When you see a line of ants (or just one ant, for that matter) spray the mixture over them. They'll immediately halt and suffocate. Wipe up the dead ants with a wet cloth, and keep the spray bottle around for next time.

• Soapy water is a natural insecticide that kills most insects, not just ants. Try it on roaches, too.
• Setting out shallow dishes of soapy water is another good way to kill ants. Lure them in with a trail of something sugary.
• This method is good for killing groups of ants, but it won't take out the entire nest. If ants keep coming back, you might have to address the source of the problem.

Try white vinegar and water. Ants really hate vinegar, and you can make a cheap, easy pesticide just using vinegar and water. Mix a 50/50 solution of vinegar and water in a spray bottle. Spray it directly onto the ants to kill them, then wipe up the ants using a damp paper towel and discard them.You can also use vinegar and water as a deterrent; spray it around your windowsills, doorways and other places where you see ants coming inside.Some people have found that using this vinegar solution to clean the floors, windows and countertops makes ants less likely to crawl over these surfaces. White vinegar makes an excellent household cleaner, and you can't smell it once it dries.

Make a lemon juice solution. If you can't stand the smell of vinegar, spray the ants with a lemon juice solution. They're averse to the citric acid in lemon juice, so you can use this spray as a deterrent as well by spraying it around the perimeter of your house. Mix up a solution of 1 part lemon juice to 3 parts water and use it as an all-purpose spray

Sprinkle diatomaceous earth inside the house. Food-grade diatomaceous earth is a very effective insecticide that doesn't harm humans or pets in the least. It's composed of fossilized diatoms that have been ground to a powder. When insects walk over the powder, the tiny fossil shards scratch the waxy outer coating on their exoskeletons, causing their bodies to dry out. Sprinkle the powder along your baseboards, windowsills, and around the perimeter of your house to kill ants.

• It's recommended that you wear a mask or cloth over your face when handling diatomaceous earth. While the powder isn't harmful when ingested, the tiny particles can be hard on your lungs when you breathe them in.
• Diatomaceous earth becomes ineffective when it gets wet, or even when the air is damp and humid. It will regain its effectiveness when dry, so if your home's humidity is reducing the potency of your DE consider using a dehumidifier in the problem areas

Use boric acid. It's completely natural and it really works against ants. When they ingest boric acid, it poisons their stomachs and they die. Boric acid also damages ants' exoskeletons the same way diatomaceous earth does. It comes in the form of a white or blue powder that you sprinkle in areas where you commonly see ants, like near your baseboards or in your windowsills.

• Boric acid is not a toxic pesticide, but it should not be consumed by humans or pets. Avoid using it in areas where your children and pets play. Don't use it near food sources or in your kitchen cabinets.
• Boric acid is nontoxic to beneficial insects, birds, reptiles or fish

Make boric acid sugar traps. These are easy to put together, inexpensive, and best of all, extremely effective. All you need is a few pieces of cardboard or index cards (one for each trap), a bottle of corn syrup or any type of sticky sugar substance, and boric acid powder. Here's how to make the traps:

• Mix 2 tablespoons of corn syrup and 2 tablespoons of boric acid in a small bowl.
• Make sure the texture is paste-like and sticky, not runny. Add more boric acid if it's too wet.
• Use a spoon to spread the mixture over the surface of your cardboard pieces. Each piece is its own trap

Laying a trap is another way to stop them as illustrated below :

Set the traps where you tend to see ants. If they like to collect on your bathroom floor, put one there. Put one under the kitchen sink, and another on your front porch. Set the traps around wherever you see ants gathering.

• Since the traps contain boric acid, don't put them in your kitchen cabinets or near food sources.
• You can put the traps outside, too. Place them in your flower beds or near your trash cans.
• The sugary smell might attract critters other than ants, like your child or dog. Make sure to put the traps out of reach of kids and pets

Wait for the traps to attract ants. If you have an an infestation, it won't be long before the traps become full of ants who wander onto the cardboard in search of sugary food and feast on the boric acid-tainted syrup. They won't die just yet, but the poison will soon take action in their stomachs. In the meantime, they'll return to their nest to bring some food back for their fellow ants, which will in turn ingest the poison.

• When you see ants entering and leaving the traps, let them move around freely. If you kill them, they won't get the chance to bring the poison back to the nest, killing dozens more ants.
• This method won't necessarily kill the entire nest of ants, but it will significantly reduce the population of ants around your home.

Change out the traps when the syrup dries. After a few days, you'll probably need to set out fresh traps. Mix up a fresh batch of the ant poison, spread it on pieces of cardboard, and set out the traps

Keep using the traps until ants no longer come to them. After a week or two, you should see the number of ants coming to feed on the syrup decline dramatically. When you start to see dead ants around the vicinity of the traps, and you no longer witness hoards of ants marching into the house your work is done.

Use cornmeal borax traps to kill the larvae. Worker ants eat liquids, not solids, but they'll carry cornmeal pieces back to their nest. They'll feed the solid pieces to larvae, which then convert the food into liquid and feed it back to the worker ants. In this way, the boric acid cycles through several generations of ants.

• Make sure the dishes of cornmeal and borax are low enough to ants to get in and out.
• You can also make a dry paste with cornmeal, borax, and a few drops of water. Spread the paste in areas where you tend to see ants