I want to keep ants off my Moro Blood Orange tree because they keep transporting aphids on to it and the aphids damage the tree. I used to use Combat bait granules but I can not find it any more. Then I used Zep ant bait trays which I liked because they are transparent and I could see when they were empty but I think they were discontinued.
What is the best system for controlling ants that is still available? I found this on the web: