Having your garden filled with ants isnt really seasonal, they dont choose a time to look for food.
Your garden is an abundant source of food for them, good for the ants but bad for you.
Try and see if this inexpensive and super easy method works for your garden.
Image Credit: Khang Starr via YouTube
Lastly, place it on the area of your garden where you would always see a bunch of ants.
*Thanks toKhang Starrvia YouTube for all images used here.
Genius Garden Ant Control Trick
