Dirty dishes

Put dirty dishes on the top of your to-do list if you’re passionate about being pest-free. “You might want to think twice about waiting until the morning to do the dishes,” says Brad Smith of Preferred Pest Control. “Insect pests such as flies, ants and cockroaches are highly attracted to leftover food on dishes.”
Moisture

Dampness attracts many different types of pest. “We need water in our everyday lives, but so do pests,” says entomologist Cherie Hartzer. “Even small amounts of water dripping from an air conditioning unit may attract wasps that are foraging for water. Water that has soaked into wood is attractive to termites. Downpipes and gutters that hold water can be perfect habitats for mosquitoes. And a dripping tap may attract rodents, especially if it has been dry and there aren’t other water sources around.” The cure? Regular maintenance that fixes leaks that could provide pests with a water source.
Warmth

When the weather turns cold outside, many bugs look for a cosy winter home – and your place may just be the perfect spot. “Bugs and beetles are just looking for a protected spot to wait out the winter and your home fits the bill,” Hartzer says.
Crumbs

Spills happen, but even a small mess attracts bugs. “Spilt food crumbs in your kitchen contain a veritable feast for insects such as cockroaches and ants,” Smith says. Regular clean-ups – including moving and vacuuming behind the stove and the refrigerator – can help make your kitchen a whole lot less palatable to pests.
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Unused drains

A dormant drain – especially one that has a little water and some organic material like hair and soap coating the insides – makes a perfect home for drain flies. “Unused drains create a slimy film that creates an ideal breeding spot for drain flies,” Smith says. “If these flies are present in the house there is almost certainly a slow or clogged drain.”
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Garbage

The smell of garbage may be completely unpleasant to your nose, but for bugs like flies, it’s like a siren call. You probably already know the secret to stopping this – contain your garbage. Make sure when you take out the rubbish to the wheelie bin, the lid can close tightly. That’ll also help keep other pests attracted by garbage, such as rodents and birds, away as well.
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Paper

Piles of papers that are rarely touched can be a big draw for silverfish and cockroaches. To avoid having an infestation damage important papers, place them in sealed plastic containers.
Still air

Keeping those ceiling fans running during the summer can do more than keep your air conditioning costs down – they help keep unwelcome critters at bay. “Many flies love still air,” Ricci says. “Fans don’t necessarily blow flies away, but they make the air turbulent enough to discourage them from hanging around too long.”
Clutter

Here’s another incentive to get rid of your extra stuff – all that clutter can make wonderful homes for insects you definitely don’t want hanging around your house. “If clutter is kept to a minimum, and a home is kept relatively clean, there will be few places for insects to hide,” Ricci says.
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Overripe fruit

That fruit bowl on your counter may be appetising – until one piece of fruit gets a little overripe and attracts fruit flies. “Don’t leave food lying around – place it in the refrigerator or sealed containers if possible,” Hartzer says.
Sweet stuff

We can’t resist sugar, and neither can insects. “Sweet and slightly fermenting substances, like wine and beer, are the most attractive to many insects, like flies, butterflies, ants, beetles and more,” Ricci says. “Species such as wasps and ants will readily go for sweet substances, like sugar and honey.” Again, keeping sweet products under wraps, in well-sealed containers, and thoroughly cleaning up spills will go a long way towards keeping pests at bay.
Cracks and gaps

Bugs are always looking for tiny spots where they can sneak into your home, so gaps in the sealer around windows, missing door sweeps, and cracks in your foundation can be like a welcome mat for unwelcome guests. There’s a simple solution: “Check all your door seals – especially on the bottom of the door – window seals and screens, even your ventilation and air conditioning systems, to make sure there are no openings for pests to get in,” Hartzer says.
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Birdseed

Birds can’t resist it – and neither can bugs. “Moths that feed on grain are a very common type of insect that invades homes,” Smith says. “The Indian Meal Moth’s favourite food is birdseed. A homeowner inadvertently brings them into their home by purchasing a bag of birdseed that is infested, and within a few weeks, a home can become infested with moth larvae and adults. To avoid an infestation, carefully check over a birdseed bag for moth larvae, adults and webbing before buying – and then keep it stored in a tightly sealed plastic container to avoid attracting animals.
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Source: RD.com