Pest control in Baltimore is an alley story as much as an indoor one. Rats use the back lanes, the gaps under doors, and the voids where additions meet old brick. Mice travel party walls and show up in kitchens that look clean. Roaches take warm, wet rooms and the chases behind tubs. Termites still want damp wood where a cellar stays wet or a sill sits in soil.
Say what you saw and where, without forcing a species if you are unsure. Droppings under the sink, scratching in a party wall at night, wings on a sill in spring, or a tube of mud on the cellar masonry are different reports. A harbor-damp basement and a pile of debris in the alley feed more than one pest at once. If the house on one side is vacant, say that. Empty rows are shelters, and the pests do not respect the property line you do.
Entry points in these houses are specific. Gaps around alley doors, holes where pipes leave the brick, broken basement hoppers, and stoops that have pulled away from the front wall all deserve a look. Clutter in a cockloft and stored cardboard in a cellar give rodents cover. A wet corner from a slow roof leak will undo a treatment that ignores the water. Mention pets, children, and a kitchen that cannot be emptied for long, because preparation is part of the work.
Tell us if this is new or if it has come back after a previous visit from someone else. You do not need a product name. You need the room, the evidence, and whether the activity is in the walls or only on the floor. Mosquitoes in a small rear yard are a different call from rodents in the structure. Termites are a different call again. One phone call can sort that, but only if the description stays concrete.
Walk the alley side and the cellar steps if it is safe. Pest control in Baltimore means shared walls, damp basements, and lanes that already belong to rodents. Say what crossed into the house and how it is getting in. Call the number on this page.