Got Mice? Pros and Cons of Using Baits in Your Walls

Got Mice? Pros and Cons of Using Baits in Your Walls
June 12, 2024 Elysa

Dealing with a mouse infestation can be a daunting task, particularly when these pests have made their way into the walls of your home. Your automatic reaction to these unwelcome guests may be to set up baits and traps to try and prevent the significant damage mice can cause by gnawing on electrical wires, insulation, and structural components. However, it’s important to weigh the pros and cons of this method to determine whether it is the best solution for your situation. Understanding the effectiveness, risks, and alternatives to using baits when mice are in your walls is crucial before you take action.

Pros of Using Baits

Effective at Killing Mice

One of the primary advantages of using baits is their effectiveness in reducing the mouse population. Baits contain attractants that lure mice in, and once ingested, the poison works to eliminate them. This method can be beneficial in areas that are difficult to access with traps, such as inside walls. By placing bait in these secluded spots, you can target mice directly at the source of the infestation.


Baits are relatively easy to use and can be strategically placed in areas where mice are active. Unlike traps, which need to be checked and reset regularly, baits can work continuously over a period of time. This convenience makes baits a practical option for homeowners who may not have the time to monitor traps frequently.

Long-Term Solution

When used correctly, baits can provide long-term control of a mouse infestation. The poison in the bait kills not just the active mice but also any future mice that come into contact with it. This can help prevent re-infestation and keep the mouse population under control over an extended period.

Cons of Using Baits

Decomposing Mice

One significant drawback of using baits is the potential for mice to die within the walls. When a mouse consumes the bait, it may retreat to its nest or a hidden area to die. This can lead to a strong, unpleasant odour as the mouse decomposes. The thought of a family of rats rotting inside a wall cavity isn’t something most homeowners are keen on. In addition to the smell, decomposing mice can attract other pests and create a health hazard in your home.

Safety Concerns

Baits contain toxic substances that can harm pets and humans if ingested. It’s crucial to handle baits with care and place them in locations that are inaccessible to children and pets. Still, when dealing with wild animals, expect the unexpected. A rodent may be able to escape the bait area and flee into a yard or open area before it dies. If your pet, or the neighbour’s pet find the dead rodent and eat it, they may get second-hand poisoning. Accidental ingestion can lead to serious health issues, so it’s essential to follow all safety guidelines provided by the manufacturer.

Secondary Poisoning

Secondary poisoning is a concern when using baits. This occurs when a predator or pet consumes a mouse that has ingested poison, leading to the predator or pet becoming poisoned. This can be particularly dangerous for household pets, such as cats and dogs, who may come into contact with poisoned mice.


Over time, some mouse populations may develop resistance to certain types of baits, making them less effective. This resistance can occur due to genetic variations within the mouse population, which allow some mice to survive the poison and reproduce. As a result, the effectiveness of the bait can diminish, and alternative methods may be required to control the infestation.

Alternatives to Using Baits


Traps are a popular alternative to baits and come in various forms, including snap traps, glue traps, and electronic traps. Snap traps are one of the most common types and work by catching mice when they attempt to take the bait. Glue traps, on the other hand, capture mice by using a sticky surface that the mice get stuck on. Electronic traps deliver a lethal shock to mice when they enter the trap.

Traps have the advantage of providing immediate results, as you can see when a mouse has been caught. They also eliminate the risk of decomposing mice within walls, as the traps can be placed in accessible areas. However, traps require regular monitoring and maintenance to ensure they are working effectively. If you aren’t able to keep an eye on the traps, it’s best to get pest control in.

Sealing Entry Points

Preventing mice from entering your home is one of the most effective ways to control an infestation. Mice can squeeze through tiny gaps and cracks, so it’s important to thoroughly inspect your home for potential entry points. Seal any openings with materials such as steel wool, caulk, or expanding foam to prevent mice from gaining access.

In addition to sealing entry points, consider installing door sweeps and repairing damaged screens on windows and vents. By making your home less accessible to mice, you can reduce the likelihood of an infestation.

Ultrasonic Devices

Ultrasonic devices are designed to repel mice by emitting high-frequency sounds that are unpleasant to them. These devices are generally safe for humans and pets, as the sound frequencies are above the range of human hearing. Ultrasonic devices can be placed in areas where mice are active, creating an environment that discourages them from staying.

While ultrasonic devices can be a useful addition to your pest control strategy, they may not be sufficient on their own to eliminate a severe infestation. It’s often best to use them in combination with other methods, such as traps or baits, to achieve the best results.

Professional Pest Control

Hiring a professional pest control service can provide a comprehensive solution to a mouse infestation. Pest control professionals have the expertise and tools to effectively address the problem using a combination of methods tailored to your specific situation. They can also provide valuable advice on preventing future infestations.

Professional pest control services can be particularly beneficial for severe or persistent infestations that are difficult to manage with DIY methods. While the upfront cost may be higher that DIY solutions, many homeowners wish they simply called the pros the first time instead of wasting hundred of dollars on ineffective DIY solutions, which sometimes can surpass the cost of a simple service from Cure-All Pest Control. The peace of mind and effectiveness of a professional service can be well worth the investment.

Key Considerations

Extent of Infestation

The severity of the infestation is a critical factor to consider when deciding whether to use baits. Alternative methods, such as traps or sealing entry points, may be sufficient for minor infestations. However, for more severe infestations, baits can be an effective part of a comprehensive pest control strategy.

Location of Bait

When using baits, it’s essential to place them in areas that are inaccessible to children and pets. Baits should be placed where mice are likely to encounter them, such as along walls, behind appliances, and in attics or crawl spaces. Using bait stations can help to contain the bait and reduce the risk of accidental exposure.

Monitoring and Maintenance

Regularly checking and replacing baits is essential to maintaining their effectiveness. Mice can become wary of old or stale bait, so it’s important to refresh them periodically. Additionally, monitoring the infestation can help you determine whether the baits are working and if any adjustments are needed.

Health and Safety

Always follow the manufacturer’s instructions and safety guidelines when using baits. Wear gloves when handling bait, and wash your hands thoroughly afterwards. Store baits in their original packaging and keep them out of reach of children and pets. If you suspect accidental ingestion, seek medical attention immediately.

Ultimately, the best approach will depend on your specific situation and the extent of the infestation. By carefully evaluating the pros and cons of each method and considering your unique circumstances, you can choose the most effective and safe strategy for dealing with mice in your walls.

In Need of a Professional Team? Contact Us!

If the idea of dead rats decomposing in your walls isn’t appealing, then it’s best to contact a professional team like Cure-All Pest Control. We make sure your home is pest free, without the dangers of DIY baiting and the cleanup. With years of experience in pest management, Cure All Pest Control offers a range of services tailored to your specific needs. Their team of highly trained and certified professionals understands the behaviour and habits of mice, ensuring that the most effective methods and products are used to address your infestation, providing you with peace of mind and a pest-free home.