Jurors got a look at where investigators believe Jeffery Willis may have taken Jessica Herringa and the Tuesday testimony focused on the home of Willis's deceased grandfather.
Investigators say a family member alerted them to the home and said he had access.
A Michigan State Police detective showed a picture of nearly a dozen empty bottles of bleach and cleaner found in the basement.
MSP Det. Sgt. Zachary Sparks said on the stand, "Seemed very unusual that so many cleaning materials were gathered in one corner of the room."
Willis is accused of kidnapping Jessica Heeringa from a Norton Shores gas station in April 2013 and killing her.
Closing arguments are expected to be presented in the Jeffrey Willis murder trial on Wednesday.