My mother has thought for years that someone is spraying her house with chemicals/poison. She believes it is a family member. She calls me at least once every two weeks to complain that someone has sprayed her house again - she smells it. She also complains that someone is in the attic “messing” with her electricity and causing her refrigerator to shut off and ruin her food. She has also accused one of her daughters of stealing photos, or people who have been in her house of stealing pieces of jewelry - only to find them later where she put them - in the back of a drawer in a bag. I’ve been listening to this for years and don’t know what to do. I’ve offered to check out her house and go into the attic, but she refuses. She is strong willed and otherwise sharp, but this obsession with someone spraying her house, messing with her electricity and stealing is getting worse.
cognitive decline
The best thing to do when your mother complains about this poison is to reassure her that you'll call in a roofer to look around the attic to make sure everything is in order. Hopefully, she'll forget all about the matter and you won't have to actually call someone in to look around the attic! If she has someone coming in to care for her daily, the CG can help calm her down with these delusions as well.
Wishing you the best of luck with a difficult situation
Does someone help her at her house? Is she living alone? With these delusions, I am a little concerned about her safety. Is she eating the food from that fridge?
It sounds like she is living by herself, right? That might need to change sooner than later for her safety's sake. When someone's brain is broken like your moms, her safety should be your number one concern. She just may not be as independent as you believe. I wish you the best in this situation.