Why Do Spiders Keep Coming Back
                     WHY DO 
SPIDERS
KEEP COMING 
BACK? 
The majority of spiders in Arizona are 
not dangerous to humans.
Instead, they go about their days eating 
other pests that frequently inhabit 
buildings and outdoor areas.
In some ways, you could even say that spiders 
provide a natural form of pest control.
Still, you don’t need spiders entering your 
property since even non-venomous ones can 
give people a nasty bite.
Recurrent spider infestations are a common 
issue, and addressing the various reasons why 
arachnids choose to keep coming back helps 
you end the problem.
A New Batch 
Has Hatched
Female spiders lay their egg sacs 
throughout the year. These sacs 
are usually laid in places where 
people might not look. 
The majority of spiders in 
Arizona are not dangerous to 
humans.
Spiders may hatch during any 
season, but the new spiderlings 
can wait out the coldest days of 
winter in their egg. 
This is why spider problems tend 
to increase during springtime.
Since each sac can hold 
hundreds of spiders, even one 
missed egg can lead to a major 
infestation once the spiderlings 
are released.
Removing spider eggs from their 
hiding places reduces the chance 
of a new crop of spiders moving in.
Clutter Creates 
a Spider-Friendly 
Environment
Spiders prefer hiding places where 
they feel safe from predators.
Basements and closets tend to be 
popular places for spiders to set 
up their webs and lay egg sacs.
These areas tend to contain 
things such as piles of clothing 
or boxes that serve as the 
spiders’ new homes.
Cleaning these areas frequently 
can discourage spiders from 
staying for long. A clutter-free 
environment also makes spraying 
more effective.
Other Pests 
Are a Steady 
Food Source
Spiders don’t invade buildings 
just to lay their eggs. They also 
come inside when they discover 
an easy source of food.
Spiders eat other insects, which 
is why they often indicate other 
pest control issues.
Eliminating cockroaches, flies 
and ants make any building less 
hospitable to spiders.
It’s Hot 
Outside
Environmental conditions 
impact how spiders behave. 
They may prefer to be outside 
where there are tons of insects, 
but severe weather events can 
change where they stay.
People often see more spiders 
coming into their house during 
times of extreme heat or drought. 
The same can happen during 
periods of heavy rain or flooding 
events that flush spiders out of 
their outdoor hiding spots.
A New 
Entry Point 
Exists
When the weather turns bad, the spiders 
still have to be able to find a way inside. 
Many common species of spiders have 
extremely small bodies.
The common house spider’s body can be as 
small as a quarter of an inch. This makes it easy 
for them to slip through tiny cracks around 
doors and windows. 
Fixing areas that allow easy entry for spiders 
keeps them outside where they belong. You can 
also take this one step further by keeping the 
landscaping maintained.
Weeds and long branches that 
grow near your house means 
that spiders may move closer 
and try to come inside when 
they find an opportunity.
A new spider invasion doesn’t necessarily mean 
that the first treatment didn’t work.
Instead, there may be new underlying issues 
that are contributing to the problem.
Spider spraying often needs to be done 
year-round to keep them from returning to your 
home or commercial building.
Custom Weed & Pest Control has 
been in business since 1989, 
serving the greater Phoenix 
metro area for both residential 
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We offer an affordable weed and 
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Phoenix AZ 85044
602-956-3844
[email protected]
wekillweeds.com