Sub-Surface Waste Management Completes Project in Scotland.

Business Editors

CARLSBAD, Calif.--(BUSINESS WIRE)--Oct. 4, 2000

Diesel Contamination Solved by BUGS

Sub-Surface Waste Management, Inc. (SSWM), a subsidiary of U.S. Microbics, Inc. (OCT BB: BUGS) today announced the successful bioremediation of a diesel contaminated site in Arbroath, Scotland for an environmental contractor.

The SSWM mission is to provide cutting-edge environmental treatment engineering and technology services to waste generators, their consultants and contractors and address environmental impacts to soil, water and groundwater regimes.

The Arbroath site consists of a nest of underground petroleum storage tanks in a gravel lined cell. An inadvertent spill of diesel fuel caused the pooling of free product that threatened to become a potential off-site release. SSWM engineers and bio-technicians supervised the removal of free product and administered a custom microbial blend designed to rapidly penetrate the gravel liner and surrounding soil to remediate the remaining petroleum hydrocarbon constituents.

Bruce Beattie, President of SSWM stated, "This successful remediation project marks the first of many projects we anticipate completing in Scotland. Our engineering expertise, coupled with the proprietary microbe collection and patented remediation processes, which now includes, MTBE, a known carcinogen, will help us generate additional revenues overseas."

Robert Brehm, Chief Executive Officer of U.S. Microbics, Inc. stated, "We are extremely pleased to see excellent customer response to our team of highly experienced engineering professionals that joined us less than a month ago. This new technical capability combined with our proprietary technology, deployed over thirty years in the market, and should help us reach record revenues and earnings this year. In the past thirty days oil companies, refineries, engineering firms and government entities have asked our engineers to provide proposals for paid technology demonstrations and solve complicated environmental problems. I am confident our engineering staff will be able to secure lucrative contracts in the near future for many of these requests."

For further information about SSWM, contact Bruce Beattie at 760-918-1860 x 103 or to learn about the company visit the website at http://bugsatwork.com.

Investor Relations: DeMonte Associates- Cynthia DeMonte/Gail Johnson - 212-473-3700 [e-mail] or [e-mail]

The information contained in this press release includes forward-looking statements. Forward-looking statements usually contain the words "estimate," "anticipate," "believe," "expect," or similar expressions that involve risks and uncertainties. These risks and uncertainties include the Company's status as a startup company with uncertain profitability, need for significant capital, uncertainty concerning market acceptance of its products, competition, limited service and manufacturing facilities, dependence on technological developments and protection of its intellectual property. The Company's actual results could differ materially from those discussed herein. Factors that could cause or contribute to such differences are discussed more fully in the "Risk Factors," "Management's Discussion and Analysis or Plan of Operation" and other sections of the Company's Form 10-KSB and other publicly available information regarding the Company on file with the Securities and Exchange Commission. The Company will provide you with copies of this information upon request.