Cleaning composition

A microemulsion cleaning composition comprising

• 1% to 3% by weight of sodium citrate;
• 0.5% to 1.5% by weight of sodium hydroxide;
• 1.5% to 6% by weight of dodecylbenzenesulfonic aid;
• 0.5% to 5% by weight of sodium xylene sulfonate;
• 1.5% to 9% by weight of ethoxylated alkylphenol;
• 0.5% to 4% by weight of glycol ether;
• 1.5% to 10% by weight of complex alkyl phosphate ester;
• 5% to 25% by weight of a glycolic acid;
• 2% to 20% by weight of d-limonene;
• and
• the balance being water.

A method of making a microemulsion cleaning composition, the method comprising:

• dissolving 1% to 3% by weight of sodium citrate in a 30% by weight water fraction;
• adding 0.5% to 1.5% by weight of sodium hydroxide and 1.5% to 6% by weight of dodecylbenzenesulfonic acid;
• adding 0.5% to 5% by weight of sodium xylene sulfonate;
• adding 1.5% to 9% by weight of ethoxylated alkylphenol and 0.5% to 4% by weight of glycol ether;
• adding 1.5% to 10% by weight of complex alkyl phosphate ester;
• adding 5% to 25% by weight of a glycolic acid;
• adding 2% to 20% by weight of d-limonene;
• and
• adding the balance of the water fraction.

A method of cleaning comprising:

• applying a first event followed by a first variable dwell time, the first detergent comprising at least two anionic surfactant;
• at least one nonionic surfactant;
• an emulsifier;
• a hydrotrope;
• a hydroxycarboxylic acid;
• a terpene solvent;
• and water;
• applying a second detergent, followed by a second variable dwell time, followed by rinsing with high pressure water, wherein the second detergent is an alkaline detergent.

A microemulsion cleaning composition comprising:

• a salt of citric acid;
• at least;
• at least one nonionic surfactant;
• a hydrotrope;
• a glycol ether;
• 5% to 25% by weight of glycolic acid, citric acid or lactic acid;
• 2% to 20% by weight of d-limonene, dl-limonene, pine oil, lemon oil, orange oil, grapefruit oil, lime oil, or bergamot oil;
• and
• water.