Before using a product
Check that it suits the surface and task. Read dilution, protective-equipment and ventilation directions. Keep children and pets away as directed, and have the original container available to check instructions.
Store chemicals securely in labelled containers and follow disposal guidance. These precautions are covered in Health Canada’s household chemical advice.
Do not mix cleaners
Mixing bleach with acids or ammonia can create dangerous gases. Do not combine products, improvise chemical recipes or add another cleaner to a product already in use. Transport Canada’s CANUTEC guidance explains these combinations.
If an accidental mixture releases fumes, leave the affected area and obtain appropriate emergency or poison-control guidance. Do not remain to experiment with neutralising it.
Make a shared household plan
Agree which products are used for each surface. Tell a hired cleaner about treatments you recently applied so they do not unknowingly add a different product.
Do not hand over an unlabelled bottle or ask someone to identify its contents by smell. Keep product information accessible rather than using a nickname such as “the strong bathroom cleaner”.
Separate preferences from safety claims
Natural, green or low-odour wording does not establish suitability for every use. A fragrance preference is worth communicating, but it does not replace label precautions or material compatibility.
For disinfection, check the authorised use and directions rather than assuming a general cleaner has a disinfecting function. See cleaning versus disinfecting.
Before a hired visit
Confirm who supplies products and equipment. Provide instructions for delicate surfaces, disclose restrictions and agree that an uncertain treatment will be checked first.
Use the preparation guide, eco-cleaning questions and surface care to make the brief specific.