How to clean grouts between tiles

Materials:

• mosaic/tiles cleaner from NTUC (big brown bottle)
• steel bristle brush from hardware shop

Methods:

1. poured it concentrated
2. scrubbed
3. clean it off

Notes:

• DO NOT leave the solution on the grout for too long. Somehow it will eat into the shininess of the ceramic tiles and you will get non-shiny stains
• If the stain is SUPER dirty, then borrow a steamer. Wash it once, then use the steamer to steam the grout, then apply the solution again then scrub