Gophers, moles, and voles can threaten lawns and gardens. Castor oil-based repellents offer a natural, pet-safe way to reduce burrowing activity without harsh chemicals. This guide highlights five top products that use castor oil to deter gophers and related pests, explaining how they work, how to apply them, and what to consider when choosing a solution for your yard.
Summary of selected products:
- Natural Elements Mole and Vole Repellent — 100% castor oil, 128 oz (1 gallon)
- PetraMax Castor Oil Mole Repellent for Lawns — 33.8 fl oz
- Baar MolEvict Lawn Mole Castor Oil — 32 oz
- PetraMax Castor Oil Mole Repellent for Lawns — 135 fl oz
- Nature’s MACE Mole & Vole MACE Granules — 160 fl oz (pack of 1)
Product Lineup To Help With Gopher Deterrence
Natural Elements Mole And Vole Repellent

100% castor oil forms the core of this repellent, aiming to disrupt the sensory perception of moles and voles. The product claims a gradual, persistent effect as the scent and taste linger in soil, creating a long-lasting barrier against lawn intrusion. It’s marketed as pet-safe and food-grade, aligning with residential applications where children and pets are present. Use as part of a broader lawn care plan to minimize burrowing activity over time.
PetraMax Castor Oil Mole Repellent For Lawns (33.8 Fl Oz)

PetraMax’s castor oil-based formula combines a natural, pet-safe oil solution with a strong emphasis on altering mole and vole feeding behavior through smell and taste. The 33.8-ounce bottle is designed for medium to large yards and presents a concentrated option for keeping lawns free of burrows. The product highlights a safe and biodegradable profile, appealing to homeowners seeking an eco-friendly deterrent.
Baar MolEvict Lawn Mole Castor Oil

Baar’s MolEvict presents a concentrated castor oil-based solution designed to drive pests like moles, voles, gophers, and other burrowers away from outdoor spaces. The product emphasizes a strong scent and texture that encourages varmints to relocate, while also highlighting eco-friendliness and safety for use around lawns, gardens, and plantings. Suitable for larger patches where burrows are active.
PetraMax Castor Oil Mole Repellent For Lawns (135 Fl Oz)

This larger-volume PetraMax option extends the castor oil mole and vole deterrent to expansive lawns. The product promotes a natural, pet-safe approach and stresses a higher total active ingredient count to deter gophers by affecting their feeding and movement patterns. A viable choice for bigger properties or when perimeter coverage is a priority.
Nature’s MACE Mole & Vole MACE Granules

Nature’s MACE offers a granule-based formulation using castor oil components to create an inhospitable environment for moles, voles, gophers, and other burrowers. The product covers a substantial area (up to 8,000 square feet) and is marketed for year-round protection. The granular format may be particularly convenient for treating larger lawns or garden beds where burrows are widespread.
Buying Guide: Castor Oil-Based Gopher Deterrents
- Effectiveness and time to see results: Castor oil repellents typically provide gradual protection as odors and tastes persist in soil. Expect it to take several days to weeks to observe changes, especially in active burrows.
- Safety and eco-friendliness: Look for pet-safe and biodegradable formulations. Castor oil-based products are often marketed as natural options suitable for homes with children and pets.
- Form factor and coverage: Choose a size that matches your yard’s size. Granules cover large areas quickly, while liquids and concentrates may require more handling but can be mixed for targeted application around burrows.
- Application method: Some products are spread as granules; others are sprayed or watered into soil. Follow label directions for best results and to minimize impact on beneficial soil organisms.
- Weather considerations: Rain, irrigation, or heavy wind can affect efficacy. Plan applications during dry spells and reapply after rainfall as directed by the product instructions.
- Safety for plants and turf: Most castor oil repellents are safe for typical home landscapes, but avoid applying directly on sensitive plants if the label advises caution.
- Integration with lawn care: For optimal results, combine repellent use with lawn maintenance practices—proper mowing height, overseeding, aeration, and removing attractants like obvious food sources or dense mulch where pests can tunnel.
- Alternatives and complements: In some cases, mechanical barriers or trapping may be considered for persistent burrow activity. Use repellents as part of an integrated pest management plan rather than a sole solution.