Found on our wall . . . |
According to pest control experts and lizard specialists, geckos
are much preferrable to rats. Though there are some internet posts about the
dangers of geckos, the scientific information I found says these claims are
false, and the truth is that geckos pose no threat to people.
Dr. Jeanne Tarrant of the Endangered Wildlife Trust in
South Africa, said in an email to a French news agency that geckos are not
harmful to humans and “actually provide a service by eating insects and spiders
around your house.”
“Humans and house geckos have been living alongside each
other for hundreds if not thousands of years, with no detriment to humans,” she
wrote. “It really would not be recommended to try to eliminate them from your
home.”
Professor Aaron M. Bauer, a biodiversity specialist at
Villanova University in Pennsylvania and a world authority on geckos—he
even has a species named after him—echoed Tarrant’s comments.
Biting, he said, is highly unusual in geckos and, in any
event, you’d receive nothing more than an unpainful nip on the off chance you
try to handle one.
Salmonella transmission is similarly unlikely, he explained:
“Geckos, like many reptiles, can carry salmonella although such
transmission is not common, and it is easily avoided. Geckos are probably less
likely to transmit salmonella than other reptiles that have larger, wetter fecal
material.”
On the other hand, rat poop is much more dangerous. Web MD
says: “Because contact with rat poop and pee can lead to dangerous and
life-threatening infections, use extreme caution when cleaning. Inhaling
particles from rat droppings can cause diseases like hantavirus, so be very
careful not to clean up the droppings in a way that kicks up dust, like
sweeping or vacuuming.”
How the geckos get in the attic and why they are always gone when we arrive is still a mystery, but an obvious part of the answer is their small size and streamlined shape. I’ll probably never be able to keep them out, but their presence probably explains why we have so few spiders and other bugs. Since they live primarily on the walls, cleaning up after them just means running the vacuum cleaner hose around the baseboard each time we return, not a bad trade-off for the organic pest control services they provide. And incomparably better than rats.