Cockroaches prefer moist environments.
Water bugs in attic.
To get rid of moisture open windows or run a dehumidifier.
If you are having a problem with roaches water bugs you should look at treating more than just the attic especially since the roaches are coming in from the outside.
These true water bugs include insects of the infraorder nepomorpha some of which can grow to almost 5 inches in length.
Check for any possible entries into your house and attic then place specifically designed traps in strategic places.
Get rid of moisture in your attic.
We would highly suggest you look at getting one of our roach control kits for indoor and home perimeter use and a granular insecticide for long term control in the yard around the home to cut down on the numbers in your area.
To be sure there are actual water bugs bugs that live in or on water.
These insects like warm and moist places such as basements and bathrooms but they won t turn down a humid attic especially if you hand deliver them by moving items from the basement to the attic.
Why pests and bugs are attracted to the attic typically used as a storage room rather than as a family gathering place the lack of activity in this part of the house makes attics the perfect shelter for pests and rodents.
The best way to prevent unwanted pest in your attic and home and attic is to locate any possible entry points and seal them off with steal or steal wire mesh.