Sadly that's not always effective. My house is immaculately clean, no food residue for ants to find, but they still come......for water! They get into toilet t

Sadly that's not always effective. My house is immaculately clean, no food residue for ants to find, but they still come......for water! They get into toilet tank, cat's water bowl, flower vase, my cup, looking for nothing but water. Not once had I seen them moving any sort of food in my house, (they also doesn't seem to be interested in cat food), but they always manage to find water. I wonder how they manage such a low calorie diet. It took quite a bit of effort to caulk every one of their entrance; which seems to be the most effective measure so far.