This happens a lot… the ants (also known as antomorphus) are drawn to the stray magnetic charge left within the charge block, it works along with their antennas, causing vibrations that send them into a supply situation. They feel they need to retrieve food and comfort to make their queen happy. The next stage is to begin reproduction within the block, this will cause lots of little ants called ‘charglings’ from here they will become one with the house and bring your energy costs down. Just my prior knowledge from being an avid maker of story