The rat infestation has been an intermittent problem for a long time.
Yes, the rat infestation was particularly bad from Jan. 1993 to Jan. 2001 and from Jan. 2009 to January of this year. Not sure they have gotten rid of it completely even yet.
“The rat infestation has been an intermittent problem for a long time.”
At least for 8 years.
Would that be rat or RAT infestation or both?