It sounds a bit out of character for ants to be in your attic they generally only are found in places that have a food source of some type.
Ant colony in attic.
I would defiantly take a closer look at these ants.
Light brown these ants are between 1 12 and 1 8 inch long.
While it would be unusual to have an entire colony in your attic it is not unheard of.
Usually the ants will lead you back to their nest.
They prefer warm regions.
This means more frequent re treatment will be needed to fully eliminate an ant problem.
Technically we are not supposed to spray it indoors.
After you ve identified the ants in your bathroom and found where they enter and exit the room you should take a few basic steps.
The ants that are nesting in the attic have to leave periodically probably at night.
All types of ants live in colonies that consist of hundreds or even millions of individual ants with one or more egg laying queens.
When ants do this to your attic structures it could significantly compromise its stability and your roof could cave in any time.
They will cross the residual and eventually get it back to the nest where it will slowly transfer to the colony.
The good news here is that the ants are visible to you and they are still going outdoors to forage which means they will walk through areas that that you treat outdoors.
They will typically create and follow the same route to.
A better spray option is a non repellent spray formulated for outdoor use.
Feed on sweets carbohydrates and other insects.
Ants will build nests where ever they can find a suitable area to do so.
For permanent control you need to get rid of the whole colony.
These ants actively excavate wood.
Ant killer sprays kill on contact but only about 20 percent of an ant colony will venture outside.
Carpenter ants have built a reputation for shaving through wood making holes and tunnels that damage it.
A single ant colony could have as many as 50 000 individuals.
This leaves the vast majority of the colony intact.
Below is a list of common ants that may nest in walls with some tips on how to identify them.
Found in attic rafters bay window voids wall voids hollow doors insulation in attics and crawlspaces ceiling voids next to skylights homes with flat roofs dormers and hollow porch columns holes or cracks where utility lines enter the home.
If you re having trouble locating the colony you can observe the movements of the ants in your bathroom.
Ants could damage your attic in as few as six months.