Thanks Nan , but I am going to pass on moth balls.
DO MOTHBALLS KEEP SNAKES AWAY? NO

Kathy Mayo, RN and Certified Specialist in Poison Information at the Blue Ridge Poison Center. “The use of mothballs as a snake repellent is an old wives’ tale that just won’t go away. When people sprinkle them under or around a house, it increases the likelihood that a child or a pet will find them and eat them. They look just like candy to young children. Also, the toxic vapors can seep up into the living spaces, sickening all of the people inside.”

Moth balls are common old-time home remedy to keep snakes away, but this old wives’ tale doesn’t stand the test of science. Mothballs don’t repel snakes. Snakes “smell” with their tongues, so methods like mothballs that rely on odors are unlikely to deter them. In fact, the odors from mothballs are more likely to bother the mammalian residents of your homestead — curious children and pets have also been known to put toxic mothballs in their mouths — and mothball chemicals like naphthalene can leach into your drinking water.

THE DANGERS OF MOTHBALLS

There are two types of mothballs on the market. They look identical, but some are made with the chemical naphthalene, while others are made with paradichlorobenzene. Both chemicals become a gas when exposed to air and cause the strong mothball smell. Naphthalene is the more toxic of the two chemicals.

The fumes from mothballs can cause headache, dizziness and irritation to the eyes and lungs. If swallowed, naphthalene can cause a condition called hemolytic anemia. This is when red blood cells break apart and can no longer carry oxygen to all parts of the body. Symptoms of this condition may include fatigue, shortness of breath and painful urination, with discolored urine.