If you apply
Ortho Home Defense Insect Killer liberally enough around the outside of your home, you may never have to deal with a roach inside your home.
Ortho Home Defense Insect Killer is both a quick-killing and a long-lasting formula, and it can be used both inside and outside of your home. As a spot killing solution, you simply squirt a bit of the stuff on a hapless cockroach you find running across your floor. But this stuff is best used to create a defensive perimeter against infiltration, and as it comes in a gallon-sized container with a powered spray wand, go ahead and apply a heavy dose all around your property.
If you already have a bad roach infestation, it's a good idea to go ahead and apply a thin line of Ortho Home Defense Insect Killer along baseboards, under cabinets, under doors, and so on. Just don't spray it where kids or pets will come into contact with the area until long after it has dried.
As part of infestation mitigation or to proactively ward off a roach approach, spray the formula all around the outside of your house, and lay it on thick. Hit the windows and doorframes, the crawlspace, the garage, and so forth. In most conditions, the barrier you lay down will last for months. Oh, and that lethal barrier you create is also effective against ants, spiders, silverfish, and more.
One Amazon customer proclaimed, "This works!" She goes on to say that she "sprayed the entire perimeter of the house outside, plus inside the house corners and closets, plus the garage" and after many "months [she] hasn't seen one bug since."
Pros: Large volume for food price, creates long-lasting barrier, good for indoor and outdoor use
Cons: Electric spray nozzles sometimes fail after minimal use
Buy a Gallon of Ortho Home Defense Insect Killer on Amazon for $12.99