Use an old, clean toothbrush dipped in a bleach solution to clean grout between tiles. If the grout is filthy, it may be easier to apply new grout.
Carpet Cleaning London | Upholstery Cleaning | House Cleaning | Domestic Cleaning London | Window Cleaning London | Contract Cleaning Office Cleaning London | Builders Cleaning | End of Tenancy Cleaning London | Professional Carpet Cleaners | Handyman London