TERRO T300 is a ready-to-use liquid bait for certain sweet-feeding household ants. Its main advantage is simple placement without mixing a pesticide. Its main limitation is equally important: ants must accept the bait, and the product is not intended for every ant species.
What the T300 package contains
The current manufacturer listing describes six stations containing a borax-based liquid. TERRO specifically excludes fire, pharaoh, carpenter and harvester ants from this product’s coverage. Check the package you are buying rather than treating all TERRO products as interchangeable. See the T300 product information and label.
Why baiting takes time
A bait is intended to be eaten and shared, rather than to knock down every visible worker immediately. More ants around a station can indicate feeding, not necessarily a worsening infestation. A manufacturer’s estimated control time is not a promise that every nest will disappear on that schedule.
The useful question is whether ants are entering and feeding, followed by whether activity declines. If they ignore a fresh station, reconsider identification, location and competing food before buying more of the same bait. A carpenter-ant problem, for example, should not be diagnosed or treated on the strength of a favorable customer anecdote about this product.
Placement and practical drawbacks
Follow the package opening directions, keep the station level, and put it only in permitted locations inaccessible to children and pets. Do not pour the liquid onto counters or food-contact surfaces. Keep the bait away from insecticide sprays that could interfere with feeding. Replace depleted stations as the label directs.
Liquid inside a small station can spill if the station is knocked over. Consider who can reach the placement, including a pet that can move objects under furniture. A convenient location for ants is not automatically a suitable location for pesticide bait.
Our assessment
T300 is worth considering when the identified ant and placement match its label and you want enclosed liquid bait. It is a poor fit when you need a fire-ant mound treatment, have an unidentified wood-associated infestation, or cannot keep the stations inaccessible. This assessment is based on the product’s intended use, not an independent timed performance test.
For a broader comparison of bait, dust and outdoor treatments, see our ant-control product guide. Avoid choosing solely by review counts: species, formulation and application site matter more than a universal “best” rating.
