DREYFUS TREASURY PRIME CASH MANAGEMENT (Third Prospectus Summary) | DREYFUS TREASURY PRIME CASH MANAGEMENT

Fund Summary

Investment Objective

The fund seeks as high a level of current income as is consistent with
preservation of capital and the maintenance of liquidity.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold
shares of the fund.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	DREYFUS TREASURY PRIME CASH MANAGEMENT Institutional Shares
Management fees	0.20%
Other expenses (including shareholder services fees)	0.01%
Total annual fund operating expenses	0.21%

Example

The Example is intended to help you compare the cost of investing in the fund
with the cost of investing in other mutual funds. The Example assumes that you
invest $10,000 in the fund for the time periods indicated and then redeem all of
your shares at the end of those periods. The Example also assumes that your
investment has a 5% return each year and that the fund's operating expenses
remain the same. Although your actual costs may be higher or lower, based on
these assumptions your costs would be:

Expense Example (USD $)	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
DREYFUS TREASURY PRIME CASH MANAGEMENT Institutional Shares	22	68	118	268

Principal Investment Strategy

As a money market fund, the fund is subject to maturity, quality, liquidity and
diversification requirements designed to help it maintain a stable share price
of $1.00. To pursue its goal, the fund only invests in securities issued or
guaranteed as to principal and interest by the U.S. government. The fund is
managed so that income paid by the fund will be exempt from state and local
taxes. U.S. government securities are considered to be among the highest quality
instruments available. By investing in these securities, the fund seeks greater
credit safety for investors. In exchange for the level of credit safety offered
by U.S. government securities, the fund's yield may be lower than the yield of
money market funds that do not limit their investments to U.S. government
securities.

Principal Risks

An investment in the fund is not insured or guaranteed by the Federal Deposit
Insurance Corporation (FDIC) or any other government agency. Although the fund
seeks to preserve the value of your investment at $1.00 per share, it is
possible to lose money by investing in the fund.

The fund's yield will fluctuate as the short-term securities in its portfolio
mature and the proceeds are reinvested in securities with different interest
rates. Additionally, while the fund has maintained a constant share price since
inception, and will continue to try to do so, neither The Dreyfus Corporation
nor its affiliates are required to make a capital infusion, enter into a capital
support agreement or take other actions to prevent the fund's share price from
falling below $1.00. The following are the principal risks that could reduce the
fund's income level and/or share price:

o Interest rate risk. This risk refers to the decline in the prices of
fixed-income securities that may accompany a rise in the overall level of
interest rates. A sharp and unexpected rise in interest rates could cause a
money market fund's share price to drop below a dollar.

o U.S. Treasury securities risk. A security backed by the U.S. Treasury or the
full faith and credit of the United States is guaranteed only as to the timely
payment of interest and principal when held to maturity, but the market prices
for such securities are not guaranteed and will fluctuate. Because U.S. Treasury
securities trade actively outside the United States, their prices may rise and
fall as changes in global economic conditions affect the demand for these
securities.

o Liquidity risk. When there is little or no active trading market for specific
types of securities, it can become more difficult to sell the securities at or
near their perceived value. In such a market, the value of such securities may
fall dramatically, potentially lowering the fund's share price, even during
periods of declining interest rates. Also, during such periods, redemptions by a
few large investors in the fund may have a significant adverse effect on the
fund's net asset value and remaining fund shareholders.

Performance

The following bar chart and table provide some indication of the risks of
investing in the fund. The table shows the average annual total returns
of the fund's Institutional shares over time. The fund's past performance
(before and after taxes) is no guarantee of future results. More recent
performance information may be available at www.dreyfus.com.

The bar chart shows changes in the performance of the fund's Institutional shares
from year to year.

Year-by-Year Total Returns as of 12/31 each year (%)

Best Quarter
Q1, 2001: 1.35%
Worst Quarter
Q4, 2010: 0.00%


The year-to-date total return of the fund's Institutional shares as of 3/31/11
was 0.00%.

Average Annual Total Returns as of 12/31/10

Average Annual Total Returns	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years
DREYFUS TREASURY PRIME CASH MANAGEMENT Institutional Shares	none	2.09%	2.09%

For the current yield for Institutional shares call toll-free 1-800-346-3621.
Individuals or entities for whom institutions may purchase or redeem shares should
call the institution directly.