Should I choose a liquid treatment or a bait system?
Choose by the house and by where the termites are working. Liquid treatment acts quickly on an active infestation and suits most foundations, though old basements and slabs need drilling. Bait systems need little drilling and suit houses where access is hard, but they depend on regular station checks. Some east-side houses end up with both.
Ask the technician what was found, exactly where, and how each method would reach it. A swarm inside a finished basement points toward treating that wall right away. A few tubes on a detached garage might be a reasonable case for bait.
Think about the long run, too. A liquid treatment is a one-time application that gets inspected later. A bait system carries a yearly monitoring cost for as long as you want the stations checked, so add that to the comparison.
How are termites treated in an old stone or brick basement?
Old limestone and brick basement walls have mortar joints, rubble cores and hollow spots that termites travel through. Treatment usually combines soil work along the outside of the foundation with drilling along the inside edge of the basement floor, so the termiticide reaches soil under the slab. The product label controls spacing, depth and volume.
Rubble and fieldstone foundations are harder than poured concrete, because the treated soil has to meet a wall that is far from solid. Expect questions about finished walls, paneling, built-in shelving and boxes stacked along the perimeter.
Porches, stoops and rear additions built decades after the house often rest on separate footings. The seams between old and new are favorite entry points, so they get their own place in the plan.
When do termites swarm in central Indiana?
Eastern subterranean termites usually swarm in central Indiana from March through May, on warm days and often just after rain. Swarmers fly from a mature colony to start new ones. A swarm inside the house, especially in a basement, means a colony is feeding in or very close to the structure.
Purdue records from West Lafayette note swarms as early as mid-March. Swarmers die quickly indoors, so the winged bugs themselves are not the threat; the colony that sent them is.
Save a few swarmers in a sealed bag or jar, or take sharp photos, and keep some wings. That makes identification easy. The guide to termites in central Indiana covers the life cycle in more detail.
How can I help a termite treatment last?
Keep soil and wood apart and keep the foundation dry. Pull mulch back a few inches from the wall, stack firewood off the ground and away from the house, fix overflowing gutters and leaking downspouts, and never let new soil, pavers or landscaping cover the treated zone or the bait stations.
Wet springs make that harder. May and June are the wettest months in Indianapolis, and an old gutter spilling onto a porch footing keeps the soil there soaked for the whole season.
Tell the technician before you regrade, pour a patio or rebuild a porch. Fresh soil and new concrete can break a liquid barrier, and the disturbed area may need retreatment.
- Mulch pulled back from the foundation
- Firewood off the ground and away from walls
- Downspouts carrying water well away from the house
- Porch posts set on concrete, not buried in soil
- Crawlspace vents clear and the space dry
Who can legally treat termites in Indiana?
Termite work for hire in Indiana is regulated by the Office of Indiana State Chemist (OISC). The business needs a Pesticide Business License and a certified applicator in category 7b, Termite Control, which covers termites and other wood-destroying organisms. Registered Technicians may apply under that applicator's supervision after passing the Core exam.
Certified applicators keep earning continuing certification hours to stay current, which matters because termiticide labels and methods change over time. Ask for the license number on the phone or when the technician calls; any company should be glad to give it.