Oct 17, 2013 - 11:59 AM
Suzanne, sit down (hopefully you already are), grab a cup of tea and relax. You are worrying way too much about this.
American cockroaches are not going to be a routine problem every year. Some years they seem to be worse than others. They go in cycles. Don't worry about next year, they might not even show up.
They can travel up pipes, but unless your house is infested with them (it's not), this is not much to worry about.
As far as cracks in the foundation, they can enter from outdoors, but when it starts getting cold outside, like next week, this will stop.
American cockroaches are sewer roaches. They will live in sewers and manholes.
As long as they can't crawl into your house through the drains, and the weather is cold outside, what you are doing now should control them.
Most exterminators exaggerate the truth about pests. This keeps them in business. You have lived in that house for 34 years and never seen more than 1 roach in the summertime - thats what you said. That's pretty good, and no reason to think that things will change.
Keep using the traps. This is the best way to monitor what is going on.