What Are Rat Biomarkers?

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Rat biomarkers are cutting-edge, non-toxic tracking and monitoring baits (MTBs) that aid in the detection of rodents around the home. These baits are irresistible to rodents but, rather than killing your invaders, instead use the power of biotechnology to help you home in on their location. MTBs contain biofluorescent or dye markers that travel through the rat digestive system and either turn their droppings reddish-pink or make them glow under a blacklight.

This makes them more visible and can help you to locate nests and identify areas with high levels of rodent activity so you can exterminate them more efficiently. Even if you are infestation-free, biomonitoring baits are a powerful preventative tool, as they can help to call the presence of rodents around your home to your immediate attention.

Biomonitoring baits can be a vital component of preventative pest control around your home, but exactly what types of pests are they meant for? What are they made of, how do they work and are they safe to use around your family and pets?

What are biomonitoring baits meant for?

Biomonitoring baits are primarily designed for use on rats and mice. When rodents eat the bait, the biomarker is excreted along with their droppings and either glows brilliantly under a blacklight or has a reddish-pink hue that is highly visible in natural light.

This makes it easy to spot droppings, which can immediately alert you to the presence of rats or mice around your home.

What are biomonitoring baits made of?

Biomonitoring baits are non-toxic food baits for rodents that contain ingredients that allow you to track and monitor your rodent population. They are specifically formulated to appeal to rodents and contain human-food grade ingredients, making them a very attractive food source for rats and mice.

The monitoring and tracking ingredients in biomonitoring baits are either a biofluorescent marker (which glows bright green under UV light) or a red/pink dye.

How do biomonitoring baits work?

Biomonitoring baits are made with human-food grade ingredients and are irresistible for rats and mice. Unlike rodenticides, biomonitoring baits are completely non-toxic and will not kill the rat. Instead, the monitoring ingredients (either a biofluorescent marker or red/pink dye) travel through the rat’s digestive system and are secreted in their droppings. Here, they either glow under a UV light or, in the case of the red/pink dye, make the rat poop highly visible in natural light.

This not only makes them far easier to spot, but also helps you to identify areas with high levels of rodent activity, work out how far the rodents are traveling and locate possible nesting zones. If you have problems with recurrent infestations, rat biomarkers can also be used to identify where their main points of entry to your house are.

Once you’ve worked out where your rodent problem is, extermination with traps or rodenticide is easy. Biomarkers are also a highly effective monitoring tool and can alert you instantly to the presence of rats and mice in and around your home.


Why use biomonitoring baits over rodenticides?

The main reason to use biomonitoring baits over rodenticides (baits containing toxic ingredients) is to reduce your use of potentially harmful substances in your war on rats. This is particularly useful for tackling rat infestations in homes with children and/or pets, schools, childcare centers or medical facilities.

When used as part of an effective integrated pest control plan, biomarkers may even eliminate the need for poison baits altogether. This makes biomonitoring baits a far safer option than rodenticide for pest control in sensitive areas.

Reducing your use of poison baits is also beneficial for the environment. Rodenticides can contain ingredients that are toxic to a wide range of other creatures including fish, birds, insects, and pets, and may have a detrimental impact on the surrounding wildlife if they enter the food chain. Biomonitoring baits allow you to closely monitor your rat situation, only applying poison baits when and where they are needed.

How effective are biomonitoring baits for controlling rodents?

When used as part of an integrated pest management plan, biomonitoring baits can be a highly effective tool for preventing rat infestations around your home.

Keep in mind!

By alerting you early to the presence of rats, they can allow you to take immediate measures to keep the rodents out of your house.

If you are fighting an active infestation, rat biomarkers can help you identify areas with high levels of rodent activity, so you know where to place traps and poison baits for efficient eradication.

Are rat biomarkers safe to use around children and pets?

Rat biomarkers are completely safe to use, even around children, pets and other animals. These non-toxic rodent baits are made with human-food grade ingredients and contain no rodenticides, making them the ideal choice for rodent control in sensitive areas.

Can biomonitoring baits be used against other pests?

Biomarkers can also be used to monitor and track American cockroaches. The biofluorescent biomarker used in these baits is powerful enough to make even the tiny feces of cockroaches glow brilliantly under a blacklight. As with rats, this can be an effective tool for controlling these pests.

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Tips for using biomonitoring baits around your home

Frequently inspect areas around possible entry points to your home

Identify possible rat entry points to your home (i.e. any crack, gap or hole in the exterior of your house) and pay close attention to these areas when checking for rodent droppings. If you see any sign of rats near your house, set up a few traps near the usual entry points to nip any potential invasions in the bud.

Identify harborage areas

Harborage areas (places of shelter) should be monitored very carefully. This is because they can make it easier for rats to get into your house, especially if they are near entry points. Common harborage sites include:

  • Drains
  • Basements
  • Crawl spaces and wall voids
  • Discarded furniture, appliances, and boxes
  • Compost piles
  • Shrubs and long grass


Rat biomarkers are non-toxic rat baits containing a biomonitoring ingredient, such as a biofluorescent marker or a reddish-pink dye. This travels through the rat digestive system after it is eaten and comes out in their droppings, making them colorful and, therefore, far easier to spot.

When used as part of an integrated pest control plan, rat biomarkers can be a highly effective tool for preventing rodent infestations. They can also reduce your use of poison baits by helping you identify areas with high levels of rodent activity, so you can place your traps and eliminate infestations with precision.

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