I noticed recently that there are ants all over one of my raised beds – they are all over the lettuce and other greens. On closer inspection I see that the leaves are also covered in aphids. The little blighters are running an aphid dairy farm in my garden! That can’t be good for the crops so I have to get rid of them. After a quick look on the internet I found one of the most widely suggested ideas for getting rid of ants is with borax, which is a white powdered acid (boric acid) that kills the ants by dehydrating them and drying them out. Here in New Zealand I was able to find borax for sale at my local Binn Inn. Generally it appears you need to mix it with something that makes it more attractive as a food to the ants.
So I started with an easy recipe – just mix it with some powdered sugar (has a similar consistency as the borax powder). I set some out for them in a beer bottle cap and dusted a little bit directly on their trail. They seemed to be avoiding it at first but when I checked this morning, they had cleaned up all the loose stuff from the trail and they were all over the bottle cap. So this morning I laid out some more second helpings for them. My plan of attack is to get rid of the ants first and then tackle the aphids.