Separate shared from personal
Agree which supplies, storage areas and chores belong to everyone.
Use visible ownership
A shared board or calendar can show who is responsible without repeated reminders.
Create a replacement rule
For shared consumables, decide how low stock is identified and who replaces it.
Respect private storage and records
Household organization should not require access to another person's personal documents or belongings.
General household information only. Follow product labels and manufacturer instructions. Electrical, gas, structural, hazardous-material and other safety-critical work belongs to appropriately qualified professionals.