How to Clean a Food Dehydrator
To clean a food dehydrator, remove all trays and wash them in warm soapy water or the dishwasher if the manual allows it. Wipe the interior housing with a damp cloth, never submerge the base unit. Let every part dry fully before reassembling to prevent mold.
What You Need Before You Start
Gather a soft sponge or non-scratch scrubber, dish soap, warm water, and a dry microfiber cloth. For sticky residue from high-sugar foods like fruit leather, a small amount of white vinegar on a cloth cuts through the film without scratching plastic or stainless steel trays. If your machine has mesh liner sheets, check the manual before soaking them because some are dishwasher-safe and some are not. Have a clean towel laid out to air-dry parts while you finish the rest of the unit. Paper towels work for the housing interior but leave lint on mesh, so use a microfiber cloth there.
Cleaning the Trays and Mesh Sheets
Trays take the most abuse, so clean them first while they are still slightly warm and residue has not hardened. Soak them in warm soapy water for five to ten minutes if food is stuck on. The Nesco FD-75A, rated 4.6 stars across 13,700 reviews, ships with plastic trays that can go on the top rack of the dishwasher, which saves time on a 4-tray load. Larger shelf-style units like the Excalibur 3926TB (9 trays, max 165 degrees F) come with polyscreen mesh sheets that you hand-wash gently because the fine mesh tears if you scrub hard. Rinse trays thoroughly and let them stand upright so both sides air-dry completely. Any moisture trapped between stacked trays encourages mold during storage.
Wiping Down the Interior and Fan Housing
The base or cabinet housing holds the heating element and fan, so it must never be submerged or sprayed with water. Dampen a cloth or sponge and wring it nearly dry before wiping the interior walls and floor. Pay attention to the area directly under where the trays sit, because juices and small food bits collect there during long runs. For a front-loading cabinet dehydrator, use a slim brush or folded cloth to reach the back corners near the fan. A cotton swab dipped in vinegar clears dried drips from door seals on box-style machines. Finish with a dry pass to remove any moisture before closing the door or stacking trays back in.
Tackling Stubborn Sticky Residue
Fruit leather and honey-glazed jerky leave behind a sugar residue that plain soap sometimes misses. Soak just the affected tray in a 50-50 mix of white vinegar and warm water for fifteen minutes, then scrub gently. Do not use abrasive pads on stainless steel trays because the scratches trap bacteria and are very hard to remove. The Cosori CP267-FD, which has earned 4.7 stars from over 26,300 buyers, has trays with a non-stick coating that releases food easily but needs gentle treatment so the coating stays intact. For mesh liner sheets with caked-on residue, lay them flat and let them soak longer rather than scrubbing harder. Rinse with clean water and hold the sheet up to light to confirm no food bits remain in the mesh before drying.
Drying and Reassembling Safely
Every part must be fully dry before you reassemble the unit or put it into storage. Even a small amount of trapped moisture between stacked trays can cause mold to develop within a day, especially after drying fruit. Stand trays on edge on a dish rack for at least 30 minutes, or pat them dry and let them sit in a warm dry spot. The mesh liner sheets from most units lie flat and dry quickly, but check that the corners are dry because they curl slightly when wet and trap water underneath. Once everything is dry, stack trays loosely and store the unit with the door or lid slightly ajar if you plan to leave it unused for more than a few days.
How Often to Deep Clean
Wipe the trays and interior after every single use. A quick rinse and wipe after each batch takes five minutes and prevents buildup that becomes hard to remove. Do a full soak and vinegar wipe-down after making anything high in sugar, like mango slices or teriyaki jerky, because the residue becomes sticky and attractsinsects if left. Once a month, or any time you notice an off smell, remove all the trays and run a damp cloth across the fan guard from the outside. Never poke anything into the fan housing. If your unit smells like old fish after making salmon jerky, wipe the interior with a vinegar-dampened cloth and run the machine empty at 95 to 100 degrees F for 30 minutes with a tray of baking soda placed inside.
Common mistakes to avoid
- Submerging the base unit in water, which damages the heating element and fan motor.
- Stacking trays before they are completely dry, which leads to mold within 24 to 48 hours.
- Using abrasive scrubbers on non-stick or stainless steel trays, which causes scratches that trap food and bacteria.
- Skipping the interior wipe after high-sugar batches, leaving sticky drips that harden and smoke on the next use.
- Putting trays in the dishwasher without confirming the manual allows it, which can warp plastic trays over time.
- Cleaning with strong chemical sprays near the fan housing, which leaves residue that transfers to food on the next batch.
Frequently asked questions
Can I put food dehydrator trays in the dishwasher?
It depends on the model. The Nesco FD-75A manual permits top-rack dishwasher use for its plastic trays. Stainless steel trays from units like the Excalibur 3926TB are usually hand-wash recommended because high heat and harsh detergents can dull the finish over time. Always check your specific model's manual before running trays through a dishwasher.
How do I get rid of smells in my dehydrator?
Wipe the interior with a cloth dampened in white vinegar, which neutralizes odor-causing residue without leaving a harmful film. After wiping, run the unit empty at a low temperature around 95 to 100 degrees F for 20 to 30 minutes with the door slightly open if possible. Placing a small dish of baking soda on one of the trays during this empty run absorbs lingering odors. If the smell persists, repeat the vinegar wipe and empty run.
Is it safe to use water directly on the dehydrator housing?
You can use a damp cloth on the housing interior and exterior, but never spray water directly onto the unit or submerge any part of it that contains electrical components. The base of any dehydrator holds the heating element and fan motor, and water intrusion can cause short circuits or permanent damage. Wring out your cloth until it is barely damp before wiping inside the cavity.
How do I clean the mesh liner sheets without damaging them?
Soak mesh sheets in warm soapy water for several minutes rather than scrubbing them hard, because the fine mesh tears under aggressive pressure. Rinse under running water and hold the sheet up to the light to check that no food particles remain caught in the mesh. Lay flat to dry on a clean towel. Avoid the dishwasher unless the manufacturer specifically says the sheets are dishwasher-safe.
How long should I let the dehydrator cool before cleaning?
Give the unit at least 20 to 30 minutes after it shuts off before handling the trays. The housing and trays retain heat well, especially after long 8 to 12 hour jerky runs, and washing plastic trays while they are still hot can cause warping. Cooling also makes sticky residue easier to remove because it firms up slightly and releases more cleanly from the tray surface.