

🚫🐜 Outsmart roaches before they multiply—because your home deserves a no-roach zone!
Terro T502 is a 3 oz indoor gel bait killer formulated with EPA-approved Fipronil, designed to rapidly eliminate German, American, and Oriental cockroaches. Its precision syringe with adjustable nozzle enables mess-free, one-handed application in kitchens, bathrooms, garages, and basements. Proven effective within 2 days, it’s a top-rated, trusted solution with over 6,500 positive reviews, making it a must-have for professional-grade home pest control.





| Active Ingredients | Fipronil |
| Best Sellers Rank | #1,089 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #32 in Pest Control Baits & Lures |
| Brand | Terro |
| Customer Reviews | 4.2 out of 5 stars 6,506 Reviews |
| Item Form | Gel |
| Item Weight | 3 Ounces |
| Liquid Volume | 3 Fluid Ounces |
| Specification Met | EPA |
A**.
Tried and true product that really works!
Ultimately, a product that successfully fulfilled its stated purpose within a two-day period. The infestation of roaches was eradicated. I reside in Houston, Texas, and was experiencing a roach issue. I have previously purchased various other products, none of which provided any significant or lasting solution. I reviewed the reviews for this particular product and found that it indeed proved effective. A noticeable improvement was observed within just two days. I plan to continue utilizing this product. We highly recommend this update for emergencies.
A**R
Works perfectly – no more cockroaches
This product completely eliminated all the cockroaches in my home — and they never came back. I honestly didn’t expect such fast and long-lasting results, but it worked incredibly well. It’s easy to use and extremely effective. This is one of those products I recommend to everyone without hesitation. If you’re dealing with cockroaches, this really works.
P**E
SOMETHING THAT FINALLY WORKS! FOR REAL!!
This is by far the best I have ever used since my infestation began! I have been battling for almost three years! I never leave any food out! I double-bag all kitchen trash, wash out the sink drains, and sweep the floor daily, and my kitchen was being taken over! I even had a service for almost a year, and nothing seemed to work. My daughter did her research and found this product. I ordered it and within 2 days, I could tell the difference! I placed lines and drops everywhere in the kitchen, including under the microwave, the Keurig, the stove, the spice racks, and even several dots under my air fryer. I put it in every small crack and crevice I found. My house is an old country house, and it is near a large open field. I have a waterbug issue at times, but since using this product, all I have found are dead waterbugs, only 2! My only issue with the product is that the writing on the container is so small, and being a senior 66 years young, I still needed additional lighting to read it! I am very pleased so far and will be subscribing to keep the product coming so I can stay on top of the problem until it is eradicated for good! EXCELLENT PRODUCT! GREAT QUALITY!
B**K
You will see a difference. It works!
I reside in an apartment complex that is undergoing construction inside vacant units and outside on the property which has resulted in a roach issue within the units. The pest control services do not come out as often as I wish they did. After trying different baiting with a perimeter spray there was not much resolution at all. I decided to try this product and I have seen a major difference! I can safely say that this stuff works! Please note that no product is going to eliminate 100%, but you will see a difference using this product.
B**S
This product kills roaches
Excellent product! As I read in the reviews before I made the purchase, I began to see results after the first three days. Just follow the directions, it works for me !
K**8
Terro T502's is "Bait and Switch"
20240928: If I was allowed a 0-star, that would be my new rating. All the other Terro products I have used were great. This T502 may work in perfect LAB conditions but not in the real world. I trashed the unused portion of the T502. Never again will I purchase the T502. 20240830: Changed rating from 2-stars to 1-star. Bait hardened to the point the roaches will need a chainsaw to create pieces to eat. "BAIT" implies they take the poison back to their nest and then the nest residents help consume the poison. This is not the case with this Terro product, unlike other better Terro products. 20240710: I sent terro.com follow-up questions, "My T502 has the consistency of medium hard caramel. Second question, do roaches eat the T502 or just touch the "bait". Terro's response: "Thank you for reaching out to us. Under normal conditions the gel is good for one year. And to your other question the roaches consume the gel. Should you have any further concerns please feel free to reach back out to us." ------------------------- My modified opinion is based on the T502 "dry-out" issues and [email protected]'s response about "drying-out" (20240708). I changed my 3-stars to 2-stars. ----------------------------- [email protected] emailed response (20240708): "Answer: Thank you for this feedback regarding the instructions, it has been shared with our Product Managers. The product should still be effective as it is drying out, but once it is completely dry, the roaches will no longer be able to consume and it should be reapplied if necessary. We do not have a time frame regarding how long it will take to dry out. This will vary based on humidity, how much was applied, what surface it was applied to, etc. This product is not taken by the roaches back to their nest to share with others. " -------------------------------------------------- My Amazon Review Terro T502 Roach Bait (and switch) ? 20240706 1. No paper instructions included. 2. Used internet to find how to allow spray can to function properly. 3. White printed instructions on side of can are barely visible. 4. "Bait" hardens after a day or two. Not sure if roaches can hammer and chisel a piece of the bait for consumption. 5. Waiting on Terro to answer these and other questions via email. I plan to modify my review based on their response(s).
T**N
It does work... Just make sure you get enough
I have seen less but it's be en over a month and still have them... I'm hoping another treatment works.
T**R
Believe the hype
All I can say about this product is… Wow! Had a bit of an infestation at a rental property. After a week, the only bug visible was a dead one. It doesn’t take much and this product really does work. Much better than all those darn sprays and fumigators. I’ll never use anything else to solve this problem.
Trustpilot
1 month ago
4 days ago