Bed Bugs in the Texas Hill Country: What You Need to Know

Bed bugs do not come in from the yard. They travel with people and things. The most common sources are hotel stays (the bug drops into your luggage at a hotel and rides home), used mattresses or upholstered furniture bought secondhand, and guests who stayed somewhere infested before visiting you. In an area with active short-term rental traffic, there is also the reverse risk: a guest brings them in and they get left behind for the next occupant.

Once they arrive, they move quickly into tight harborage spots. A single mated female can start a new population, which is why a small problem grows faster than most people expect.

The bites get most of the attention, but they are not a reliable diagnostic tool because reactions vary widely. Some people react immediately, some develop welts days later, and a few show no skin reaction at all. Physical evidence in the room is more useful.

Pull the mattress away from the headboard and check the seams and piping with a flashlight. You are looking for rust-colored or dark brown spots (digested blood the bugs leave behind), translucent shed skins about a millimeter long, tiny pearlescent eggs, and the bugs themselves. Live adults are about the size and shape of an apple seed, flat, and reddish-brown. Nymphs are smaller and paler, almost see-through after a recent hatch.

Also check: the box spring (pull the dust cover off the bottom), the headboard and its mounting hardware, the inside of the nightstand drawer, upholstered chairs near the bed, and baseboards within a few feet of the sleeping area. Bed bugs stay close to the host.

Throwing away the mattress is the most common mistake. The bugs are not just in the mattress. They are in the box spring, the headboard brackets, the baseboard cracks, behind outlet covers, and in seams of nearby furniture. Dragging an infested mattress through the house spreads the problem to rooms it had not reached yet.

Store-bought sprays and foggers have a poor track record with bed bugs because bugs hide in voids and cracks where a surface spray or fog does not penetrate. Foggers may push them deeper or into adjacent rooms. Some local populations have also developed resistance to common over-the-counter pyrethroids.

There are two reliable professional methods: heat and chemical. Heat treatment raises the room to a lethal temperature (usually above 120°F) and holds it long enough to reach bugs inside furniture and wall voids. It is typically a single treatment and kills all life stages, including eggs. It requires prep and some items need to be removed.

Chemical treatment uses professional-grade residuals applied in cracks, along baseboards, inside box springs, and on mattress seams. It usually requires two or three visits spaced two weeks apart to catch any eggs that hatch after the first application. Both methods work when done correctly. Your technician will walk through the prep requirements before the treatment and inspect the scope of the infestation to recommend the right approach.

At ACI Pest & Lawn, we treat bed bugs in the Highland Lakes area with methods matched to the level of infestation and the type of property. A rental property with a narrow treatment window has different needs than a primary residence.

Use a mattress encasement on the mattress and box spring after treatment. These zippered covers trap any survivors and prevent new bugs from establishing. Leave them on for at least a year. Monitor with glue-board interceptors placed under bed legs: they catch any remaining bugs trying to reach the bed.

If you own a rental property, a post-stay inspection protocol and clear communication about reporting to guests before checkout are worth building into your process. Catching an introduction early is far less disruptive than treating a property after it has had time to spread.