New York City streets will be tidier under an initiative announced Wednesday by Mayor Bill de Blasio.

The $6.7 million CleaNYC program expands graffiti removal and sidewalk power-washing services in high-traffic commercial corridors and bumps up the city Department of Sanitation’s Sunday and holiday litter basket collection by 40 percent.

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“Part of what we need to do everyday is show people a city that is getting safer, cleaner, more orderly,” de Blasio said at a morning news conference at a SoHo sanitation garage.

The CleaNYC initiative also will increase highway shoulder and ramp cleanup. It will begin in April and cost $4.2 million in expense funds and $2.5 million in capital funds in the upcoming fiscal year.