Having invested more than 50 euros in bait boxes from various manufacturers, which turned out to be a waste of money, I decided then but for this poison solution. The results surprised me then already, as it came very quickly and was very efficient. Shortly after use of this poison, were members of the ant raids the past. Since it runs also under the category 'contact poison', it should be used with pets very anxious. Unfortunately, I have decided after doses disaster for a 500gr jar. But I did not need much of it, so I now have more abundant supernatural. That's enough only times at least for the next ten years. ;-)
Addendum: Two months later, there was a renewed attack of this little six-legged friends. Two hours after this litter also use this attack was nipped in the bud. Slightly less than half a teaspoon enough for it.