11 DIY Pest Control Solutions to Protect Your Garden
- Ana O'Neill
- Mar 11
- 7 min read

Imagine this: you’ve built your dream garden on a budget, and somehow, your plants are thriving. The last thing you need? Some creepy, unwanted roommates. If you’re like me and don’t have the time (or let’s be real, the money) to bring in the pros, we’ve got your back. The good news? There are plenty of ways to kick those pests out of your garden oasis, and the best part, you can totally do it yourself.
Use Neem Oil Spray
One of the most effective DIY solutions I've used for dealing with pests on both houseplants and outdoor plants is a homemade neem oil spray. Neem oil is a natural insecticide that disrupts the life cycle of common pests like aphids, spider mites, and whiteflies without harming beneficial insects. Over the years, I've fine-tuned the process to make it as effective as possible. I mix two teaspoons of cold pressed neem oil with a few drops of dish soap in a liter of water, shake it well, and spray it directly onto affected leaves, ensuring I coat both the top and underside.
This method suffocates soft-bodied insects and disrupts the feeding and reproduction of others. Thanks to my background in horticulture, I've learned how to properly apply this solution at the right time--early morning or late afternoon, to prevent leaf burn and maximize effectiveness. One case that stands out was when a client's rose garden was infested with aphids, which were stunting growth and causing leaves to curl.
Instead of immediately resorting to chemical pesticides, I applied my neem oil solution every few days and introduced ladybugs, a natural predator of aphids. Within two weeks, the infestation was under control, and the roses bounced back with vibrant blooms. My years of experience taught me that an integrated approach using both natural sprays and biological control, delivers the best long-term results without harming the environment. This is the kind of expertise and practical knowledge that sets professional gardeners apart, ensuring plants not only survive but thrive.
Try Neem Oil and Water
As someone who runs Biggins Exterminating Co., I've seen how a simple mixture could effectively deter pests from both indoor and outdoor plants. One of my go-to DIY methods is a combination of neem oil and water. Neem oil acts as a natural pesticide, especially effective against aphids and spider mites, which often afflict gardeners. A ratio of 1 teaspoon of neem oil mixed with a liter of water, sprayed on the plants, works wonders without harming them or beneficial insects.
One memorable case involved a client struggling with aphid infestations on their houseplants. After applying the neem oil solution, they noticed a significant reduction in pests within a week. This method not only helped keep their indoor plants healthy but also avoided using harsh chemicals that could be harmful to children or pets in the home.
For those dealing with larger infestations, I've found that a regular treatment plan ensures long-term protection and healthier plants. Using a safe, natural method like neem oil aligns with our commitment at Biggins Exterminating to provide pest control solutions that prioritize safety and effectiveness without unnecessary contracts or synthetic chemicals.
Neem Oil Spray Is Effective
As a professional pest control company, our go-to DIY solution for houseplant and outdoor plant pests is neem oil spray. It effectively eliminates aphids, spider mites, and whiteflies by disrupting their lifecycle. Mix 1 teaspoon of neem oil with a few drops of dish soap in 1 quart of water, then spray on affected leaves and stems every 7-10 days. This natural method is safe for plants and helps prevent future infestations.
Ryan Wood, Owner/Exterminator, Woody's Exterminating
Move Plants or Be Proactive
One of the most effective ways to deal with pests that are on indoor plants is simply moving them outside for a couple of days and letting the soil dry out a little bit. I've seen a lot of indoor house plants attract gnats and this has been successful at getting rid of them. For the outside plants, a method would be to just be proactive. Don't wait for the infestation to happen; put your product of choice out before the pests are seen and have moved in. This can be effective for many pests like ants, spiders, and earwigs.
Matt Smith, Co-Owner/Licensed Pest Control Technician, Green Pest Management
Introduce Natural Predators
As the owner of AJM Grounds LLC in Woburn, Massachusetts, I've dedicated years to integrating sustainable landscaping solutions. One of my go-to DIY solutions for pest control on outdoor plants is the use of Integrated Pest Management (IPM) techniques. Specifically, I often introduce natural predators like ladybugs to organically combat aphid infestations.
IPM has proven highly effective in maintaining the health of various plants while minimizing the need for harmful chemicals. I've seen great success with this method on numerous properties where clients had issues with aphids and other soft-bodied insects. This approach not only protects the plants but also preserves the ecosystem by encouraging a balanced natural habitat in both residential and commercial landscapes.
Encouraging biodiversity and using eco-friendly practices align with our commitment to sustainability at AJM Grounds. For instance, in creating sustainable landscapes, we've incorporated native plants that attract beneficial insects, reducing pest issues naturally while enhancing the overall health and beauty of the gardens we design. This not only maintains the aesthetic value but also contributes positively to the environment.
John Caplis, Business Owner, AJM Grounds
Soap and Water Spray
As a co-owner and operator of Evans West Valley Spray Co., I've worked for years with homeowners and gardeners on pest problems. Perhaps the most effective do-it-yourself solution I recommend to treat common pests such as aphids, spider mites, and whiteflies is a simple soap and water spray. Safe and inexpensive, when used correctly, this method is quite powerful.
To make the solution, combine 1 to 2 teaspoons of mild liquid dish soap (not degreasers or harsh detergents) with a quart of water. Combine the ingredients and then pour the mixture into a spray bottle. Apply the mixture directly onto the infested plants, including directly onto the top and underside of leaves where pests often hide. The soap breaks down the pests' cell membranes, killing them without damaging the plant.
The spray works best when applied during early morning or late evening hours and not in direct sunlight, which would dry the solution and potentially damage the plant. Repeat every 5-7 days and continue until the infestation is under control.
Michael Evans, Co-Owner and Operator, Evans West Valley Spray Co.
Use Natural Pesticides
One of my go-to DIY solutions for dealing with pests on both houseplants and outdoor trees is a simple but highly effective neem oil spray. Neem oil is a natural pesticide that disrupts the life cycle of many common pests, including aphids, spider mites, and scale insects. I mix two tablespoons of neem oil with a gallon of water and add a few drops of dish soap to help the solution adhere to leaves. Spraying this mixture on affected plants every few days has helped eliminate infestations while keeping the plants healthy. My years of experience as a certified arborist have taught me that prevention is just as important as treatment, so I always recommend inspecting plants regularly and applying neem oil as a proactive measure.
One of the most notable times I used this method was when a client had a severe aphid infestation on their crape myrtles. The leaves were curling, and the tree was covered in sticky honeydew, attracting ants. With my knowledge of tree health and pest behavior, I treated the trees with neem oil over two weeks, ensuring even coverage on the undersides of leaves where aphids hide. The infestation cleared up, and the trees made a full recovery without the use of harsh chemicals. This experience reinforced how a simple, natural approach backed by expertise can be just as effective as commercial pesticides.
Amaury Ponce, Business Owner, Ponce Tree Services
Neem Oil Spray Is Effective
At GreenAce Lawncare, the most effective DIY solutions I recommend for pest control is a simple neem oil spray. It's safe, natural, and works wonders against pests like aphids, spider mites, and whiteflies. I've used it with clients who've seen major improvements, like one in Boston whose roses were overrun with aphids. After a few days of using neem oil, the infestation was gone, and the plants bounced back strong. Mix two teaspoons of neem oil with a gallon of water and a bit of dish soap, and you've got a powerful, eco-friendly solution that's easy to apply. It's a simple, cost-effective way to keep your plants healthy without harmful chemicals. At GreenAce, we believe in solutions that work quickly, simply, and sustainably.
Use Natural Insect Predators
I recommend using natural insect predators to protect your raised garden beds. These predators include ladybugs, praying mantises, and lacewings. These insects are incredible at pest control and will provide non-chemical protection.
Brandon Runyon, Entomologist, Swat Pest Management
Use Organic Repellents
We organically grow for some prestigious clientele, and we use "cedarcide" and "cedarwood" repellents. You can obtain your organic certification with the usage of these products and really stay organic. Botanical insecticides are also a great way to get rid of erratic pests like potatoes and bean bugs while maintaining an organic garden.
Tammy Sons, Founder/CEO, TN Nursery
Use Larvicide Dunks
As a pool service professional, I often deal with pests that can affect pool areas and surroundings. One effective DIY solution for keeping pests like mosquitoes at bay involves the use of a larvicide dunk. These dunks can be placed in standing water around your garden or yard and work by targeting mosquito larvae before they mature. It's a preventive approach that aligns well with keeping pool water clear and safe.
When managing algae starting to form not just in pools but also in any damp surrounding areas, I turn to enzyme products. They're not just great for keeping pool water clean but also helpful in breaking down organic materials that attract pests. Applying these enzymes in garden areas can reduce attractions for pests like slugs and flies, addressing their presence without harsh chemicals.
Handling these challenges requires a balance similar to maintaining the chemical levels in my clients' pools. For those in Northern California, where rains can affect pool environments and surrounding plants, these enzyme solutions ensure a healthier outdoor space, deterring pests while protecting your investment.
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