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12th September
Good housekeeping can be summed up in one basic principle: you and your pets should be the only living organisms in your house.Back home, this is not too difficult to achieve. Once upon a time it was said that an Englishman's home was his castle, but a modern Englishman's house is in fact his aquarium: a glass-windowed tank, carefully sealed from the outside world. The main reason for this design is to shut out cold air, but it has the useful additional benefit of shutting out any creature incapable of turning a door handle. In any case, most of Britain's wildlife is of the kind you see in children's books sitting on toadstools in the forest, rather than the kind that you see illustrated on cans of poison spray. As a result, most British homes contain few living things larger than a bacterium, and with the help of expensive cleaning products even the bacteria can be kept to a minimum. Houses on Pentecost are different. Since none are heated or air-conditioned, there is no need for them to be well sealed - in fact, many builders deliberately incorporate holes in their houses to let in light and fresh air. Even houses that are made from cement and plywood, rather than from bits of the local forest, are lightly built and contain plenty of cracks and crevices. Windows are almost permanently open, and although in the newer houses these are meshed to keep out mosquitoes, the meshing easily acquires holes. This being the tropics, there is no shortage of critters that will find them. Here at Ranwadi I accepted long ago that my house is a place of biodiversity. Housekeeping here is an exercise in ecology, trying to manipulate the environment so as to control the populations of the more obnoxious members of the ecosystem. Rats, for example. These are endemic in Vanuatu's villages, and in its schools. Leaning against the walls of the Dining Hall, you can feel the vibrations of the creatures running behind the wooden boards, inches away from you. In a staff meeting I was once laughed at for suggesting that the school ought to try and do something about them. Every so often one of these rats finds its way into my kitchen and spends a contented couple of days foraging there. Things come to a tragic end when the hapless rodent stops to investigate the morsel of food placed temptingly on a metal plate surrounded by spring-loaded wire. A few rat-free weeks then go by before another rat comes along, finds the seemingly-inviting territory to be vacant, and never stops to wonder why. Few of the rats make it as far as my bedroom (I am very careful not to keep anything there that might tempt them in), but one or two are adventurous. One night I had a dream in which a rat was crawling over me. I awoke to the sound of scuttling rodent disappearing down the side of my bed, and realised that there had indeed been a rat crawling over me. A different rat, finding all the food in my kitchen sealed into gnaw-proof containers, developed a taste for eating the candles that I keep around the house to provide lighting after the school generator is switched off in the evenings. When I got fed up with the tooth marks on my candles and hid them away in tins at bedtime, the rat switched to eating my bathroom soap instead. The following night I set two traps: one baited with food, the other baited with candle wax. The rat ignored the food, but couldn't resist the wax, and is now roaming the great chandlery in the sky. Last month, in a reshuffle of the staff accommodation at Ranwadi, I was moved into a new house, at the bottom of the hill at the entrance to the school. Rats don't seem to venture down to this part of the school much, but in their place the house has other visitors: large black lizards that hide in the cupboards and leave runny trails of droppings across the kitchen floor. Lizards present an unusual pest problem: they don't touch (or don't spring) my rat traps, and none of the store-bought poisons that proudly claim to kill rats, mice, flies, ants, cockroaches, spiders and so on make any mention of diarrhoeic reptiles. In the end I was reduced to chasing the creatures around the kitchen, trying unsuccessfully to stab them with various implements. I didn't want to have to kill the lizards, but nor did I want to cook in a kitchen full of shit. The black lizards, together with the yellow geckoes that hunt moths across the walls, form the top of the house's food chain. I am technically at the bottom of the food chain (in an interesting reversal of the outdoor situation), since it is my crumbs and dead skin cells that sustain the smallest of the insects, and my blood that feeds the mosquitoes which make it past the netted windows. At the second level of the food chain are the spiders. Pentecost's is home to some worryingly exotic-looking spiders - such as the armoured black-and-yellow Butsungos, which shares its name with a monster in local stories - but these tend to stay outdoors. Most of the ones I find indoors are essentially ordinary brown house spiders, although some of them would be large enough to get their photos in the local newspaper if they came crawling out of a bunch of bananas back home. Despite their evil size, they don't appear to be dangerous to anything larger than a cockroach, and since anything dangerous to cockroaches is very welcome in my house, I have never attempted to sweep out the creatures. As the saying goes, my enemy's enemy is my friend. The giant spiders, which seem to hunt by pouncing on their prey, are at least less messy than the smaller ones, which gather in colonies to spin webs of sticky fluff along the walls and ceiling. The house's insects, too, are an ugly but ultimately fairly harmless lot (unless you count the abundant malaria-carrying mosquitoes, which are technically the world's most deadly creature). Wasps and hornets are absent, apart from one slender variety (an introduced species, according to the locals) that doesn't appear to sting anyone. Flies are an immense irritation when sitting outdoors, but the mosquito netting keeps most of them out of the house. The ants are a nuisance in the kitchen, but can easily be kept off food by standing the plates and containers in dishes of water. (This doesn't stop the geckoes, which enjoy licking sugary things and have been known to take flying leaps onto trays of cakes and biscuits surrounded by water.) The local insect life is most evident at night. Moths and other species that evolved to navigate by flying towards the moon never anticipated that human beings would one day fill the world with artificial moons, and Ranwadi, being the only place for miles around with electric lighting, attracts swarms of the creatures. After the power is turned off for the evening, the moths and flies abandon circling the fluorescent lights and turn their attention to any other light source they can find. When working late on my laptop, I keep a candle beside it to distract the insects that would otherwise hurl themselves at the screen when the electricity goes off and the laptop, switching to battery power, becomes the only source of light in the room. One particularly stupid variety of beetle will fly straight into the candle flame, get knocked out by the heat and spend a few minutes recuperating before flying straight back into the flame, repeating this over and over again until the witless insect succeeds in burning itself to death. I hope that if enough people burn candles on Pentecost, evolution will eventually teach this species to fly only towards the cold white moon, not the hot yellow one. At bedtime I blow out the candles (which leaves the house smelling of birthdays), and the place becomes completely black. This is the cue for the cockroaches to come out of their crevices. Occasionally I attempt to deal with these by fumigating the house with spray cans brought from Vila, which kills a good number of them, but the population quickly recovers. Brands of insecticide that promise to provide "lasting three-month protection" don't live up to their claims; Pentecost houses are too porous, and too well-ventilated. Fumigation does have the interesting side effect of driving out the more exotic crevice-dwellers, organisms that I would never otherwise have realised that I was sharing a house with, but in some cases I would have preferred them to remain hidden. Past hauls of dead creepy-crawlies found after fumigation have included millipedes as long as pencils, a centipede as long as my finger, and a small scorpion. The centipede bothered me the most. From the otherwise-dull Arthropod Biology course that Edinburgh University forces its zoology students to take in their final, two images stuck in my mind: the eerily blue eyes of one of the girls in the class, and the sight of a garden centipede under a microscope. The latter made me shudder; a more sinister-looking creature would be hard to imagine. The tropical centipede that I found dead in my house at Ranwadi looked much the same, except that I didn't need a microscope to make out clearly the rows of jagged, articulated legs or the red, venomous pincers. The locals reassured me that the beast was harmless. The giant venomous centipedes that terrify expatriates in Port Vila are an urban pest, not found on Pentecost. I put the centipede in a jar, took it down to the science lab, and pickled it in methylated spirits. Next time the biology students were learning about the redness and toothiness and clawiness of Nature, it would make an enlightening specimen.
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