Ant Problem! Some close to greasy stuff and some similar to sweets. Spraying, 'chalk'ing are pro tem solutions When it is too cold or too hot, they come inside.
When it is too cold or too hot, they come inside.
Answers: I would use bait control stations, their little squares that have poisen they step in to and steal the poisen with them to their colony.Another method is using any product one being Terro ant assassin which comes in an ginger bottle.Or Otho Home defence both murder on contact and can be used as a border meaning you can spray it on the bottom of sinks and counters and it will protect up the 3 months.Best bet it so find out where on earth their coming from either one of the sprays will work great along next to a combination of the ant control stations.
You could use boric acid. Boric acerbic is poisonous to ants acting on their exoskeleton and is not harmful to human beings.