There is only ONE SURE WAY of actually ridding the moles. It is a chemical, a DEADLY chemical that is used called Phosphine, otherwise known as PH 3(exponent). This stuff is so deadly, it's beyond words. There are only few lawn and extermination companies that are certified and licensed to use this product. This is an inhalent, in pelletized form, that is activated by moisture. It will kill dogs, cats, and humans with no problem. This is NOTHING like the digestive type poisons that are available. This product is NOT available to public, and by NO means is sold, in any form, on the open market. There are special handling and storage instructions for this product that surpass ANY pesticide available. From what I understand, special licensing is needed to even aquire this product. To give an idea, this product comes in a sealed can, that must be stored in an AUXILARY container, and then stored in a cabinet that is designated for dry containment. There are two companies in my area, that provide this service that is entitled "mole control", that is guaranteed, and it is extremely costly. From what I understand, an app. runs about $125 for a small burrow treatment of mole damage, and around $225 for the season. I guess this is the price for real results. This is nothing like Tru Green does, as they will not even touch it. This can, which contains 100 tablets, sells for around 200 bucks. This re-enforces the cost of the apps. One pellet is placed every 30 or 40 feet of run. It would only take a few pellets to diminish a whole family of moles. Check around your area, and see if anyone else provides this service.