Q: Bradley, our young indoor-outdoor cat, recently experienced a bout of vomiting, lethargy and seizures. By the time we got him to the veterinarian, he seemed normal and the vet could find nothing wrong. Two days later, however, Bradley suffered a repeat episode. I just now remembered that our neighbor had scattered mothballs in her garden to deter skunks and groundhogs. Bradley eats everything, and it wouldn’t surprise me if he munched on a mothball. Can mothballs cause the problems he’s been having? A: Yes. Mothballs are so toxic that they deserve no place in the garden or anywhere else a child, pet or wild animal could ingest even one of them. Most mothballs in the U.S. contain either naphthalene, which causes most of the mothball poisonings in pets, or paradichlorobenzene. Naphthalene, a component of fossil fuels such as coal and petroleum, is twice as toxic as paradichlorobenzene, an insecticide. …