It’s been about 48 hours after I sealed off gaps underneath the sink in my bathroom. Outside of that one straggler ant that was probably trapped on the wrong side of the threshold, I have not seen any other ants since. I don’t want to jinx it and declare victory on that front just yet, but the signs are all looking good.
In the kitchen, results are a bit more mixed. There are still a fair number of ants under the sink and I can’t say these are the ones who were caught out after I sealed off the gaps. There are still a few gaps under the sink that need sealing. One gap I can seal off with the silicone sealer but the others are cutouts for pipes and wiring. These cutouts are huge and I need an foam expanding foam or perhaps tape to these areas off.
The kitchen is still a work in progress, so the battle continues.