Can I put expired milk or juice in the grocery compost cart?

No, bulk liquids like milk, juice, or soda are not accepted in the organics stream. These items should be emptied into a drain, and the containers should be recycled or disposed of separately to avoid exceeding the 2% contamination weight limit.

How do I dispose of old fryer oil from the grocery deli?

Fryer oil and other fats must be collected in a dedicated grease bin provided by a rendering company. Never pour oil into the 96-gallon composting carts, as grease is considered a contaminant and is difficult to process in an aerobic system.

What happens if a cart is too heavy because of liquids?

If a cart contains excessive liquids, it may leak or become a safety hazard for our drivers. In such cases, we document the contamination with a photo, notify the store manager, and provide a coaching call to help the team improve sorting practices for the next pickup.

Is there a discount for grocery stores in Summerset for long-term contracts?

Yes, we offer negotiable terms of 3, 6, or 12 months for commercial accounts. Customers who sign a 6-month agreement receive 5% off, and those who commit to a 12-month term receive a 10% discount on their service.

Grocery Stores in Summerset

Managing Liquids and Grease in Summerset Grocery Composting

Summerset, SD

Grocery Stores

4 min read

Green commercial composting carts lined up at a grocery store loading dock in Summerset, South Dakota, with the Black Hills in the background.

For grocery managers operating along the Sturgis Road and Highway 79 corridor, the weight of food waste is often the primary driver of high disposal costs. Produce culls, bakery pulls, and floral trim contribute significant mass to the waste stream, making organics diversion a practical strategy for controlling the bottom line. However, the efficiency of a composting program depends on the consistency of the material. While solid food waste is the goal, liquids and grease often find their way into the organics stream, creating logistical issues at the point of collection and at the processing site.

In the Summerset area, where residential growth and new apartment complexes are increasing the demand for local services, maintaining a clean organics stream helps keep regional routing efficient. When liquids like soup, heavy brine, or fryer oil are added to a 96-gallon cart, they compromise the integrity of the load. Understanding the distinction between what is compostable and what requires a separate disposal path is essential for staying within the 2% contamination tolerance and avoiding the public nuisance designations defined in Rapid City Municipal Code 8.16.010.

The short answer

Liquids, grease, and oils do not belong in your organics cart. While small amounts of moisture naturally occurring in produce are expected, bulk liquids create several problems. First, they add significant weight without adding high-quality compostable material. Second, they leak during the tipping process, creating sanitation issues in the receiving area. Finally, fats, oils, and grease (FOG) do not break down in the same manner as solid food scraps and can disrupt the aerobic composting process.

Grocery stores should prioritize solid materials for their [industries/grocery](https://rapidcitycompost.com/industries/grocery) program. Items that belong in the cart include:

Produce culls from the department floor or prep area.
Outdated bakery items, including breads and pastries.
Deli overproduction and trimmings (solids only).
Floral department trim and expired bouquets.
Scale-verified solids that contribute to weight reduction in the trash.

How the pickup works locally

Rapid City Compost operates throughout the Elk Creek Road area and Summerset central neighborhoods, providing [service-areas/summerset](https://rapidcitycompost.com/service-areas/summerset) with the same pickup cadence and pricing structures as our core Rapid City accounts. Because Summerset is only a 15-minute drive from our routing and sits directly on the I-90 corridor, we are able to bundle routing with nearby Black Hawk and Piedmont. This logistical advantage eliminates the need for a 'long-haul' premium, making weekly organics collection an affordable alternative to traditional trash hauling.

Typical grocery store setups involve one or more 96-gallon carts staged in a secure receiving area or near the loading dock. Each week, our trucks access these carts via the I-90 corridor. At the time of service, each cart is weighed. Customers receive a scale-verified pickup receipt immediately, providing an accurate record of diverted weight. For stores focused on internal metrics, [guides/grocery/summerset/measuring-results](https://rapidcitycompost.com/guides/grocery/summerset/measuring-results) provides a framework for using these receipts to track waste reduction goals. If a load contains excessive liquids or prohibited grease, it is documented with a photo and a note according to our [contamination-policy](https://rapidcitycompost.com/contamination-policy).

Common mistakes we see

The most frequent error in the deli and prepared foods sections is the disposal of 'heavy' waste like expired soups, sauces, or saturated fats directly into the green cart. While these are technically 'food,' their liquid state makes them unsuitable for our collection method. Similarly, fryer oil from the deli must be handled through a specialized grease renderer; it should never be poured into organics carts. When liquids are present, they settle at the bottom of the 96-gallon cart, making the cart extremely heavy and difficult to maneuver, and often leading to spills during transit.

Another common mistake is failing to drain produce before disposal. For example, if a department is clearing out a misted produce rack, the water should be drained before the culls are placed in the cart. Minimizing added water ensures the weight we record is actual organic material, not just greywater. Managers looking to refine these back-of-house habits can benefit from a [guides/grocery/summerset/waste-audit](https://rapidcitycompost.com/guides/grocery/summerset/waste-audit) to identify exactly where liquids are entering the stream.

What to do next

If your store is currently struggling with high trash invoices due to the weight of food waste, transitioning to a dedicated organics route is the most effective solution. To get started, evaluate your current volume of produce and bakery waste. For stores currently using a different service, reviewing the steps for [guides/grocery/summerset/switching-haulers](https://rapidcitycompost.com/guides/grocery/summerset/switching-haulers) can help ensure a smooth transition without service gaps.

Once your carts are on-site, train staff to keep liquids out. This simple step protects your equipment and ensures you stay compliant with local nuisance codes. We offer flexible terms for 3, 6, or 12 months, with discounts for longer commitments. To discuss a custom cart setup for your Summerset location, contact Rapid City Compost at 605-600-1660 or visit our [pricing](https://rapidcitycompost.com/pricing) page to see how bundled routing in the Black Hawk and Piedmont area keeps your rates competitive.

For the full picture of how we serve Grocery Stores in this region, see /industries/grocery, and for pickup details specific to Summerset, see /service-areas/summerset. Related reading for the same operation: /guides/grocery/summerset/marketing-your-program. You may also want /guides/grocery/summerset/waste-audit. Questions about your own setup are best answered directly — reach us at /contact.

Serving Summerset, SD and the surrounding Black Hills. See the grocery stores service page, Summerset service area, or our contamination policy.

Managing Liquids and Grease in Summerset Grocery Composting

The short answer

How the pickup works locally

Common mistakes we see

What to do next

Summerset grocery stores composting questions

More grocery stores guides for Summerset

Same guide in other Black Hills towns

Ready to compost what you can't sell?