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8 Composting Mistakes That Attract Pests and How to Fix Them

Composting is an excellent way to recycle organic waste, enrich your soil, and reduce landfill contributions. But as wonderful as composting is, it can sometimes come with an unwelcome side effect: pests. From rodents to raccoons, an improperly managed compost pile can quickly turn into a buffet for local wildlife.

Fortunately, most pest problems stem from a few common mistakes—and with the right know-how, they’re easy to fix. Here are 10 composting mistakes that attract pests and tips to keep them at bay.

1. Adding Meat, Dairy, or Oily Foods

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One of the quickest ways to invite pests to your compost pile is by including meat, dairy, or foods high in oil or grease. These items produce strong odors that attract rodents, raccoons, and other scavengers. While they decompose, they can also create unpleasant smells that waft through your garden.

Fix It: Stick to compost-friendly items like fruit and vegetable scraps, coffee grounds, and yard waste. If you’re worried about balancing your compost, follow the “greens and browns” rule: mix nitrogen-rich “greens” (kitchen scraps) with carbon-rich “browns” (leaves, straw, or cardboard) to create an odor-free pile.

2. Not Covering Food Scraps

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When food scraps are left exposed, they become a beacon for pests like flies, raccoons, and even stray cats. A visible pile of fruit peels or vegetable scraps might seem harmless, but it can quickly turn into a pest magnet.

Fix It: Always bury food scraps under a layer of “browns,” such as shredded newspaper, dried leaves, or soil. This not only reduces odors but also hides food from curious critters. I make it a habit to keep a small bucket of dry leaves next to my compost bin for easy layering.

3. Failing to Manage Moisture Levels

House Fly, Flesh Fly or Meat Fly Sarcophagidae Parasite Insect Pest on Fruit. Danger of Disease Vector, Pathogen Transmission or Infection Germ Spreading
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Too much moisture in your compost pile creates a soggy, smelly mess that attracts flies and other pests. Conversely, a dry pile slows down decomposition and can encourage ants to set up shop. Striking the right balance is key.

Fix It: Aim for a pile that feels like a wrung-out sponge—moist but not dripping. If your pile is too wet, add more “browns” like shredded cardboard or dry leaves to absorb excess moisture. If it’s too dry, sprinkle it with water as you turn the pile. Regularly turning your compost also helps regulate moisture and prevents pest infestations.

4. Composting Cooked Foods

woman holding pasta
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While it might seem harmless to compost leftovers like pasta, rice, or cooked vegetables, these items decompose differently than raw scraps. Cooked foods often contain oils, seasonings, or fats that attract pests and create odors.

Fix It: Avoid adding cooked foods to your compost altogether. If you’re composting leftovers, stick to raw scraps like fruit peels, vegetable trimmings, and eggshells. For those using bokashi composting or other advanced methods, cooked foods may be acceptable, but always check the guidelines for your system.

5. Letting Food Scraps Pile Up Before Adding Them

Boy helping mother to put kitchen waste, peel and leftover vegetables scraps into composter in the garden
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Storing food scraps in a container on your counter or in the fridge is convenient, but letting them pile up for too long can cause them to rot and attract flies or fruit gnats. When you eventually add them to the compost pile, the smell can also attract larger pests.

Fix It: Empty your food scrap container into your compost pile regularly—at least once a week. Use a countertop compost bin with a charcoal filter to control odors in the meantime. I empty mine every few days, and it’s made a big difference in keeping my kitchen and compost pile pest-free.

6. Ignoring Pest Signs Early

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If you notice pests near your compost pile—whether it’s overturned scraps, burrowed soil, or increased flies—it’s a sign that something needs attention. Ignoring these early warning signs allows the problem to escalate.

Fix It: Act quickly at the first sign of pests. Reinforce your compost bin with secure barriers, adjust moisture levels, and ensure food scraps are properly buried. Addressing problems early prevents larger infestations and keeps your composting system running smoothly.

7. Composting Without Turning the Pile

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A compost pile that isn’t regularly turned can develop anaerobic conditions, leading to slow decomposition and strong odors that attract pests. These smells can signal to raccoons or rats that food is nearby.

Fix It: Turn your compost pile at least once a week to aerate it and speed up the breakdown of organic matter. I use a compost aerator tool to make turning easier, and it’s helped keep my pile pest-free while producing rich compost faster.

8. Placing the Compost Bin Too Close to Your Garden

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Positioning your compost bin right next to your vegetable garden might seem convenient, but it can create a direct pathway for pests to move from your compost to your crops.

Fix It: Place your compost bin at least 10–15 feet away from your garden beds. This distance makes it less likely that pests attracted to the compost will venture into your plants. I moved my bin to the far corner of my yard, and it’s made a noticeable difference in keeping pests away from my vegetables.

*This article was created with the assistance of AI.

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