How to Exterminate Bees That Live Underground

What You'll Need
Handheld sprayer
Garden hose
Plastic sheet
Glass covers
Protective, clothing gear
Retailed pesticidal solution
Enzymatic spray
Garden soil

Bees living underground are difficult to eliminate compared to those found in open spaces. Bees and pests like hornets tend to multiply quickly. Their meager-looking, underground colonies can soon explode into threatening numbers. Underground colonies are often found near garden borders and sites where the walls are in contact with the garden soil. The most common problem in exterminating underground beehives is finding a way to reach the deep-seated nests. Spraying the underground nesting sites with chemical sprays is the easiest option. Further, it is vital that the residue of pesticidal sprays and dead bees is cleaned-up. If this is not done, the site might be re-colonized by the bees. The decaying bodies could attract other garden pests.

Underground Bee Extermination Instructions

Determine a period for spraying the nesting site. Bees generally have a pattern in returning to their hives. Spraying them during this period means you will be able to kill the maximum number of bees. You need to observe the beehive for a couple of days. Usually, bees start returning to the hives around sunset. This observation will also help you to discover all the possible exit sites. Once these basic details have been confirmed, proceed in the following manner:

Preparing Yourself

You need some form of basic, protective clothing. This is vital to guard against stinging by fleeing bees. You can create a handy protective gear from household clothing. Use long, tight-fitting trousers and woollen shirts along with socks, gloves and a cap. In order to seal any entry points, seal your ankles, neck and wrists with a plastic tape. You can also use protective eyewear like sunglasses.

Preparing the Spraying Site

All the entry/exit points to the beehive should be covered with a plastic sheet or a glass cover. You can also use pieces of rock to block possible escape routes. However, ensure that there is minimal space that will allow the sprayed fluid to enter the beehive. A few bees may escape through such spaces, but this is unavoidable.

Spraying the Underground Beehive

You should use retail, bee-killing formulas. These can be found at most hardware supply stores. You can combine this with enzymatic, pesticidal sprays. These are sprayed after the bees have abandoned their colony. Enzymatic sprays help to dissolve-away the bee carcasses. Most underground beehives are accessible with handheld sprays. However, if you feel that the hives are very deep, a garden hose can be used. Spray repeatedly, without any substantial waiting period. 

Checking the Sprayed Site

Inspect the sprayed site after 24 hours. If you find that the bees are flocking back, spray again. When most of the bees have either died or abandoned the nest, use the enzymatic spray. Squash the nesting site, using your foot or a spade. Pour some loose garden soil over it. Clamp down upon the soil, to block any form of ventilation. Water the site profusely. These precautionary measures ensure that any surviving bee inside the nest is killed.