FAQs

Account setup is quick once your contract is signed. For used cooking oil containers, delivery typically takes 10 to 14 days and may be faster if your location is near a Mahoney depot or a Regional Account Manager. New grease trap accounts take 30 to 45 days before the first service.

Our trucks use onboard measuring devices, such as a flow meter or digital gauge, that automatically record the volume of oil collected. This lets us determine the exact amount picked up on every trip.

Usually no, because pickups follow a set schedule. You may need to call if your container fills up sooner than expected, or if your location is on a call-in-only schedule, meaning pickups happen only when you request them.

To request a pickup, contact Mahoney Environmental customer service by calling 800-892-9392, texting 971-254-2033, or submitting our online form.

Pickup frequency depends on how much oil your facility generates and the size of your storage tank. Mahoney schedules collections around your typical usage so your tank does not overflow. If you need a pickup sooner, call 800-892-9392, text 971-254-2033, or submit our online form.

Normal service runs Monday through Friday. Emergency services are available in some markets when needed.

Keeping the used oil tank and surrounding area clean is the customer's responsibility. Mahoney will assist when needed and will clean up any spills that occur during our collection process. We recommend keeping oil-absorbent materials on hand to contain any spills between pickups.

Depending on the severity and our current routing, Mahoney aims to respond to emergency spills or unscheduled pickups within 24 to 48 hours. We recommend keeping oil-absorbent materials on hand to contain any spills in the meantime.

No. Mahoney does not typically remove another provider's tank because it is not our property.

No. Mahoney Environmental's used cooking oil recycling service is free.

After a Regional Account Manager assesses your needs, Mahoney provides a clean storage container for your used cooking oil and arranges a collection schedule. After each collection, we record the amount of usable oil, which is usually most of the total volume collected, and issue any rebates based on that amount and your volume.

Yes. Frequencies are set based on your historical oil production and container size, but we know production can change. If your container fills up faster than usual, let us know, and we will adjust the schedule.

Call, text, or email customer service to request a pickup. In the meantime, store the extra oil in buckets or the containers the cooking oil originally came in, placed next to our container. Be sure to notify customer service about the additional oil so we can alert the driver.

Yes. Mahoney offers grease trap cleaning in many areas. This is a separate service with pricing that varies, so please contact customer service for details.

Contact Mahoney customer service to confirm we have your correct address and to check when your last rebate check was issued.

No. Mahoney does not offer public or residential drop-off; you must be a business to use our service. We do provide one-time services for special events such as festivals and fairs.

Mahoney offers a range of indoor and outdoor used cooking oil containers to fit your operation. Our team helps you choose the right size, placement, and whether direct-connect equipment is the best fit. Learn more about our containment options.

Mahoney typically asks for at least 10 to 14 days for tank delivery. Delivery may be sooner depending on how close your location is to one of our depots or Regional Account Managers.

Yes. Tanks can be replaced if one is damaged, stolen, or needs to be swapped out for servicing.

Routine cleaning and maintenance of the used oil tank are the customer's responsibility. Mahoney will assist when needed and will clean up any mess determined to have occurred during our collection process.

First, call your local police; do not confront the individuals. Note any details you can, such as the license plate, make, model, and distinguishing features. Then contact Mahoney by calling 800-892-9392 or submitting a Grease Theft Incident form.

No. Mahoney does not use Penske, U-Haul, or other rental trucks to collect used cooking oil. If you see one, it is likely theft. Call the police immediately, then contact Mahoney at 800-892-9392 or file a Grease Theft Incident form.

Keep your container in a locked area monitored by security cameras. If that is not possible, make sure the container stays securely locked at all times to prevent unauthorized access. Learn more about grease theft prevention.

If your oil volume has not changed but rebates have dropped, theft may be the cause. Check any security footage for someone collecting oil who is not in a Mahoney uniform or vehicle. If you suspect theft, report it to the police, then contact Mahoney at 800-892-9392 or submit a Grease Theft Incident form.

First, call your local police. Then contact Mahoney by calling 800-892-9392 or filing a Grease Theft Incident form.

Cleaning frequency depends on your grease trap size and how much grease your kitchen produces. Most cities require traps to stay below a set level of FOG (fats, oils, and grease) accumulation, which usually means cleaning at least once per quarter, sometimes more often. A Mahoney Regional Account Manager can help you set the right schedule.

About 99% of the grease trap material Mahoney pumps goes to anaerobic digesters, where it becomes clean energy for heating and power. The rest is processed at our licensed facilities and treated per local environmental regulations. No grease trap material is ever put down the drain.

An overflowing trap usually means it has gone too long between cleanings or there is a problem with your pipes. Mahoney can pump and clean an overdue trap, and if the issue is in your pipes, we recommend consulting a plumber so it is fully resolved. See our tips on preventing backups.

Yes. Mahoney offers free used cooking oil recycling. Contact customer service to get started.

Mahoney offers several payment options:

• Auto-pay: call our accounting team at 800-892-9392 to set up a credit card.
• Online: sign up for an online portal at https://mahoneyes.com/online-account-sign-up/.
• Check: use the remittance address printed on your invoice.

Mail checks to the remittance address printed on your invoice. You can also set up credit-card auto-pay by calling our accounting team at 800-892-9392 or pay online.

Rebates are based on the market value at the time of collection and are paid the following month, based on the volume and yield from each month's collected oil.

Renewable diesel can reduce greenhouse gas emissions by up to 75% (CO2 equivalent) over its life cycle compared to fossil diesel, because it reuses a waste product instead of newly extracted petroleum and burns cleaner. By recycling your used cooking oil with Mahoney, you help supply the feedstock for these lower-carbon fuels.

Renewable diesel and biodiesel come from renewable sources but are chemically different. Renewable diesel, or HVO (hydrotreated vegetable oil), is chemically identical to fossil diesel, so it works as a 100% drop-in replacement with no modifications. Biodiesel, or FAME (fatty acid methyl ester), contains oxygen, which affects its cold-weather performance and storage. Because of this, most engine manufacturers limit biodiesel to a 20% blend, and some allow only 5%, while renewable diesel can be used neat or at any blend ratio.

Neste works to fight climate change by helping North American businesses and cities reduce their carbon footprint through renewable solutions. Mahoney supports this mission by collecting used cooking oil and supplying it to be transformed into renewable fuels. Learn more about Neste.

Mahoney Environmental has been a subsidiary of Neste since 2019.