Rodent Bait Types

Why Different Rodent Baits Exist

One of the most common things we hear is:

“I’ve already put bait out, but it didn’t work.”

In many cases, the issue isn’t whether bait was used. It’s which bait was used, how it was placed, and whether it was monitored properly. There is no single bait that works in every situation.

The right approach depends on:

• The level of rodent activity
• The species present (rats vs mice)
• The environment (home, farm, food premises, etc.)
• Whether ongoing monitoring is required
• Safety risks to pets, wildlife and non-target animals

Understanding the differences helps explain why some DIY approaches work and why many don’t.

First Generation Anticoagulant Baits (FGAR)

Active Ingredients

Warfarin, Coumatetralyl, Diphacinone

How They Work

First generation baits are multi-feed rodenticides.

This means rodents must feed on the bait multiple times over several days before receiving a lethal dose.

Where They Are Commonly Found

• Supermarket products
• Hardware store baits
• DIY rodent control kits

Pros

• Lower strength compared to other bait types
• Can be used in some ongoing or lower-level situations
• May suit customers who do not want frequent follow-up visits

Limitations

• Require repeated feeding to be effective
• Slower acting
• Results can be inconsistent
• Rodents may stop feeding before receiving a lethal dose
• Resistance can occur in some populations

Key Takeaway

FGAR baits can work in some situations, but are often less reliable for established infestations.

Second Generation Anticoagulant Baits (SGAR)

Active Ingredients

Brodifacoum, Bromadiolone, Difenacoum, Difethialone, Flocoumafen

How They Work

SGARs are single-feed rodenticides, meaning a rodent may receive a lethal dose from a single feed.

They are significantly more potent than first generation baits.

Where They Are Used

• professional pest management programs
• controlled baiting systems
• high-activity or established infestations

Pros

• Highly effective for active infestations
• Often works after a single feed
• Useful where rodents may be resistant to other baits
• More reliable in high-pressure situations

Important Considerations

• Must be used in secure, tamper-resistant stations
• Higher risk to pets and wildlife if misused
• Must be carefully managed and monitored
• Requires ongoing review (typically monthly) under current guidelines

Key Takeaway

SGARs are the most effective tools for gaining control of an active rodent problem, but they must be used responsibly as part of a managed program.

Monitoring (Non-Toxic) Bait

Active Ingredients

None (food-based attractants)

What They Do

Monitoring bait does not kill rodents.

It is used to:

• Detect activity
• Confirm whether rodents are still present
• Monitor sites after control has been achieved

When They Are Used

• After activity has reduced
• In sensitive environments
• As part of long-term monitoring

Key Takeaway

Monitoring bait helps us track activity without leaving poison in place unnecessarily.

Non-Anticoagulant Rodenticides

Active Ingredients

Bromethalin, Cholecalciferol (Vitamin D3), Zinc phosphide

How They Work

These products use a completely different mode of action compared to anticoagulant baits.

Some are faster acting and do not rely on repeated feeding.

Pros

• Often faster acting
• Different mode of action
• No risk of secondary poisoning

Limitations and Risks

• No reliable antidote
• Higher risk to pets and non-target animals
• Effects can be more severe and less predictable
• Require careful handling and application

Our Approach

For safety reasons, Spiderman SE does not use non-anticoagulant rodenticides.

Why Bait Choice Matters

Using the wrong bait — or using the right bait incorrectly — can lead to:

• Ongoing rodent activity
• Bait being ignored or avoided
• Incomplete control of the infestation
• Increased risk to pets and wildlife
• Confusion about whether the problem is improving

Rodent control is not just about the bait. It’s about:

• Selecting the right product
• Placing it correctly
• Monitoring what happens next
• Adjusting the program as needed