Ants Still Alive

Ants still alive

Ants still alive after a pest control service why is this. This is something we get asked a lot at the time of a pest treatment for ants. There is a very simple reason for this and it’s because we don’t want them to die, or at least die straightaway.

Most customers want to see all the ants dead straight after a treatment, but this just isn’t an effective way to deal with them.

We want the ants to do the job for us, and by this I mean we need them to pass the product around the colony.

A bit about Ants

Ants still alive what Product’s best

The product used to eliminate an ant colony is Termidor and the active is Fipronil. This has been around for about 10 years now and has been very successful in the treatment of ants and termites.

Before we go any further with this there are non-generic brands of Termidor We always use Termidor as we believe it works better than the non-generic brands.

Any ants still alive after a pest treatment will have no idea that they have this product on them, it’s this that makes it so good. As mentioned earlier if the ants knew they had poison on them the rest of the colony would reject them.

Because of the way fipronil works the ants have no idea, allowing them free entry to the main colony.


When we start a pest control treatment, we will complete the internal first and then move onto the outside.

The external is where we target insects such as ants as this is where they come from before they enter a building. Finding the colony is a must to treat ants successfully, but not when you treat them with fipronil.

In the old days of pest controlling we would need to find the ant nest to have any chance of bringing a problem under control. But now with new developments in insecticides, this isn’t necessary anymore.

As mentioned earlier ants have no way of knowing they have fipronil on them. So now all we need to do is treat the trailing ants found outside on paths, gardens or structures. This makes treating them much easier than before and gives a much higher success rate.

Ants around the house

Ants still alive after treatment

So, you’ve had a treatment carried out and you still see trailing ants. This is because fipronil will not kill the ants on contact. To kill an entire ant colony takes around 2-3 weeks.

The reason we need prolonged mortality of 2-3 weeks is to give enough time to pass the product around the entire colony.

After the initial treatment, you should start to see fewer ants within a few days as the colony starts to die off. The only thing that will interrupt this process is the customer.

If the customer decides to try and kill off the remaining trailing ants, the system won’t work. So ants still alive is a good thing as we use them to our advantage.

We have done jobs before where the customer has sprayed the remaining ants with products such as Mortein. This is the worst thing that can be done, as the ants that are sprayed won’t make it back to the main colony to pass the Termidor/Fipronil around.

The best thing to do after a pest control service is to listen to your technician. They will always say spray nothing, just leave the treatment to do it’s job and call after 3 weeks if problems persist.


Always listen very carefully to your pest control company, as they are the ones you’re paying to sort your problem out.

If you interfere with a professional treatment your pretty much wasting your money. Before doing anything ask your pest technician first.

If a treatment is done correctly and by a reputable company a full 12-month warranty should apply.

Here is a link to some home remedies to try and eliminate ants on your own.

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Jason Neale Owner of Sunnystate Pest Control customer advice about Covid 19

About author

Jason Neale is the owner of Sunnystate we are a professional Pest Control and Termite company servicing customers throughout Brisbane – Ipswich – Gold Coast and have been in the industry for over 20 years and is also a keen blogger.