Why are Pests More Active in Summer

Factors Contributing to Increased Pest Activity During the Summer Season

It can be really frustrating when summer shower comes, only to find that your home has suddenly become infested with pests.

So why are some pests more active during the warm temperature?

Eco Pest Control Perth, the best pest control service provider, tells us that it’s because certain conditions prevail in the warm months making for an ideal breeding ground for common pest of all kinds.

In this article, we will discuss which of these conditions contribute to increased pest presence in warm weather and what you, as a homeowner, should look out for.

Then finally we’ll recap on five prevention and control strategies that you can use to keep your home pest-free this hot weather.

A. Increase in Temperature and Humidity

It’s a combination of an increase in humidity, even body temperature. And when those two things occur, it creates all sorts of opportunities for insects and other critters to thrive. This means they’re likely to propagate at an alarming rate. For example, most insects’ metabolism increases in extreme heat. Meaning they need some form of hydration to keep them cool. This is in addition to needing food and shelter. Couple this with high humidity levels and you have yourself a perfect little oasis that’s practically begging bugs to come in and stay. Plus, whilst many pests and stinging insects hate the cold weather, high heat can also help them to survive longer so they can reproduce faster.

B. Access to food and water

With access to food and water, it’s no wonder that these pesky critters are more common during hot summer days as compared to winter months. Not only do they have a steady availability of food, water, and shelter throughout the season. But they can also reproduce in great numbers due to an increase in heat and humidity. So coupled with long days of drinking from the outside faucet or fruit trees around your house, these pests seem to almost multiply overnight. Bird feeders in particular provide a much-needed resource for birds. But unfortunately, they’re also often used as convenient restaurants by other unwelcome guests like rodents and insects looking for a quick bite.

C. More Reproduction

As mentioned earlier, the combination of increased heat and extra moisture means that certain pests are able to reproduce more efficiently. Also, their longer life cycle. Warm, wet conditions allow rapid development from egg to adult. Most pests will complete a generation in less than a month given optimum environmental conditions. This then allows some species such as mosquitoes and cockroaches to rapidly increase their population size which could lead to serious infestations if left unchecked. For example, you could find yourself dealing with several generations of them each summer simply because of the favourable climate for breeding. Taking quick action at the first signs of such infestations is essential for prevention and control purposes.

D. Longer Daylight Hours

The length of the day also plays an important role in encouraging pests to move around and feed more freely. When days are shorter, they’re restricted by the amount of darkness available which limits their search for food and other resources. However during summer when days are longer, some of these pesky pests can make up a lot of lost time before night falls and they’re once again confined to their protective places. Additionally, certain species prefer summer months for feeding. So with peak heat lasting throughout most of the night in summer, it creates a prime environment that encourages a host of them to come out for a late-night meal.

E. Increased outdoor activities

Increased outdoor activities during summer can attract a host of pests to your home. For example, picnics, camping trips, and garden parties are all popular activities that leave behind residues that may be attractive to certain bugs or critters. If you’re hosting an outdoor event then make sure you clean up any leftovers afterwards to reduce the chances of pest population coming sniffing around in search of food. Also, regular maintenance such as keeping lawns mowed and removing fallen leaves from the garden is a great way to eliminate hiding places for some of these tiny creatures looking for a spot to call home.

F. Increased Moisture

Warm climates are usually accompanied by higher levels of moisture, which can then increase moisture in the soil and surrounding areas. When this happens, it encourages a variety of pests to take advantage of this ideal habitat. For instance, certain kinds of insects like mosquitoes are attracted to bodies of water such as old tires, flower pots, and other overflowing containers. In search of wet environments in which they can lay their eggs. As such, these types of pests can be particularly troublesome during damp weather when more standing water is around for them to utilise.

G. Hitchhiking

Hitchhiking is another common way pests like fruit flies, termite, and mosquitoes can spread. When you visit the beach or camping ground, it’s possible for some bugs to attach themselves to your clothes and luggage, which they then use to “hitch a ride” back home with you. And when you arrive, these unwanted passengers are generally ready and willing to start looking around for shelter and food. So if you’re planning on a summer of outdoor activities, make sure your bags are properly checked before bringing them in. As this tiny precaution could be the difference between an impromptu pest infestation or not.

H. Pest biology and behavior

The biology and behavior of specific plant pests can also affect their activity levels during summer. Differences in behavior from species to species can lead to more or less population sizes in certain areas. For example, certain insects may have peculiar traits that make them more or less active during warmer temperatures. Additionally, some species of ticks may become more prevalent during the summer months and jump from person to person as they prefer warm, humid environments for breeding and laying eggs. On the flip side, other creatures like raccoons may be less active due to a decrease in food sources. Meaning that they’ll be less likely to stick around and cause any trouble. Understanding the different habits of various pests is one way of minimising your chances of an infestation this summer.

I. Abundance of resources

The plentiful resources around your property provide a much-needed attraction for pests who are looking for a place to hide away. Also, feast on tasty morsels without being detected by humans or predators alike. So not only do you have increased humidity levels, and access to water but you now have an ample array of food sources. All of these things combined attract a host of pests who happily take up residence around your home. It makes it a potential threat to your health and well-being during the warmer months.

J. Ability to use thermal light sources

Many pests respond well to the warmth of a lamp or other artificial source. So make sure you check any outdoor lighting in case there’s something lurking beneath. This can also occur indoors too. So it pays to be aware and keep these hot spots away from areas where you might find pests congregating. This is when they become active during the summer months.

Prevention and Control Strategies for Summer Pests

1. Eliminate all sources of food, water, and shelter

Keep any external food or drink containers sealed to prevent opportunistic critters from getting in. Additionally, be sure to clean up debris such as leaves from around your yard. Lastly, they ensure there is no standing water that could serve as a breeding ground for mosquitoes.

2. Block access points into your home

A prime way for pests to get inside is through cracks or openings in walls, floors, doors, and windows. Ensure these places are properly sealed with caulk or other materials so nothing can slip through unnoticed.

3. Keep outdoor garbage areas secured

Garbage bins should be secured at all times so that scavenging animals don’t have easy access to human waste. This could contain anything from leftovers to pet food remnants. Both of which would provide an inviting snack for nearby pests.

4. Monitor and remove existing nests

Existing nests on rooftops or in other hard-to-reach places should also be monitored regularly and removed if necessary. This will help to minimise any risk of a bigger infestation occurring later in the summer.

5. Encourage natural predator populations

Attracting natural predators such as birds and bats is also a great way to keep pest presence at bay. They’ll work together to maintain some sort of balance within the larger ecosystem.


In conclusion, it’s important to be aware of how conditions such as temperature and humidity levels can provide an ideal breeding environment for certain pests in your household.

Knowing which factors contribute to their increased activity during the summer months can help you take steps toward reducing any potential threats before they become an issue for you or your family.

Utilising our five methods of prevention and control outlined above will ensure that your home remains safe from pesky intruders all season long.

This gives you all the peace of mind that you need so you can enjoy summertime activities with ease.