Exclusion is the most important part of eliminating your rat problem
We prefer not to use poison underneath houses or in attics. After all, no one wants to deal with the odor of dead rats.
The biggest part of eliminating a rat problem is blocking the path of entry into your home. Otherwise, even if you remove the rats that currently call your property home, more will find their way in. Hire an experienced exterminator in Grants Pass, OR who knows what to look for when eliminating a rat problem.