My Aunt and Uncle are very old and Uncle is fighting with Altzheimer's. They have had a problem with stray ants for most of the winter...
The cleaning lady and I found out why yesterday....Uncle has a stash of cookies and candy under his pillows...I lifted the pillows and YUCK...way too many were swarming on the cookies.
I had a hard time getting the sheets off the bed without wearing any...but took it outside and let them freeze for a bit.