How Indoxacarb Works: The Science Behind Advion Gel Bait

Advion Cockroach Gel Bait is used by pest professionals around the world. The reason is its active ingredient: indoxacarb. Here's a simple explanation of how indoxacarb works and why it is so effective against cockroaches.

What is indoxacarb?

Indoxacarb is an insecticide from a chemical class called oxadiazines. In Advion Cockroach Gel Bait, it is mixed into a bait matrix that cockroaches find attractive to eat.

Step 1: Activated inside the cockroach

Indoxacarb is what scientists call a pro-insecticide. In its original form it is not the active compound. After a cockroach eats the bait, enzymes inside the insect's body convert indoxacarb into a more active form. This process is called bioactivation.

Step 2: Blocks the nervous system

The activated compound blocks sodium channels in the cockroach's nerve cells. Nerve signals stop working properly, so the cockroach stops feeding, becomes paralysed and dies.

Step 3: Delayed action reaches the colony

Because the effect isn't instant, the cockroach has time to return to its harbourage, the hidden group in the cracks and walls. Studies on indoxacarb baits have shown that other cockroaches can then be exposed through contact with the droppings and remains of cockroaches that fed on the bait. This secondary transfer is how bait reaches cockroaches that never came out to feed.

Why this matters for your home

• Reaches hidden cockroaches that spray never touches
• Works on all life stages that feed, including young nymphs
• Small amounts placed in cracks, with no fumes
• Highly attractive bait that cockroaches seek out

Compare with sprays in cockroach gel vs spray.

Why you shouldn't spray over it

Indoxacarb bait works only if cockroaches eat it. Insecticide sprays and strong cleaners contaminate the bait and make cockroaches avoid it, so keep sprays away from bait spots.

How to get the best results

• Place small dots where cockroaches hide. See where to apply cockroach gel
• Remove competing food and water
• Check and top up bait regularly
• Be patient. See how long gel takes to work

As with any insecticide, follow the product label and place bait out of reach of children and pets. Read our safety guide.

Frequently asked questions

What is the active ingredient in Advion cockroach gel?

Indoxacarb, an insecticide from the oxadiazine class, mixed into an attractive bait gel.

How does indoxacarb kill cockroaches?

After it's eaten, enzymes in the cockroach convert it into an active form that blocks sodium channels in the nervous system, causing paralysis and death.

Does Advion gel kill the whole colony?

Its delayed action lets cockroaches return to their hiding places, and other cockroaches can be exposed through droppings and remains. This helps reach the hidden population.

Why is Advion gel slow to work?

The delay is intentional. It gives cockroaches time to spread the bait's effect to the colony before they die.