A room turnover is one of the best opportunities a cultivation facility has to reset biological risk. It is also easy to rush. A useful turnover SOP removes the guesswork by defining the sequence, products, dwell times and verification before the next crop enters.

Step 1: Remove the crop and gross debris

Remove plant material, stakes, trellis, media, disposable items and waste according to the facility's clean-to-dirty flow. Dry debris should be removed before wet cleaning so it is not spread around the room.

Step 2: Protect or isolate sensitive equipment

Identify electrical components, sensors, lighting, motors and materials that cannot be treated with the same chemistry or pressure as floors and walls. Check equipment-manufacturer instructions before cleaning.

Step 3: Clean from high to low and clean to dirty

Work in a repeatable direction. Remove dust, plant residues, films and sticky soils from benches, walls, drains, irrigation components, floors and other contact surfaces. Resin-heavy areas may require a cleaner specifically suited to cannabis resin rather than relying on disinfectant to perform both jobs.

Step 4: Rinse or remove cleaner residue where required

Follow the cleaner label and surface requirements. Residual soil or incompatible chemistry can reduce the performance of the next step.

Step 5: Apply the disinfectant correctly

Prepare the product at the specified concentration, achieve complete coverage and maintain the required wet contact time. More concentrated is not automatically better. Use the product exactly as directed for the intended surface and jurisdiction.

Step 6: Address overlooked touch points

Door handles, hose ends, controllers, cart wheels, drains, floor-wall junctions and movable equipment often escape the main cleaning pass. Include them in the written checklist.

Step 7: Dry and inspect

Before reintroducing plants, confirm surfaces are visually clean, required residues have been removed and the room is dry or otherwise ready according to the product instructions and facility SOP.

Step 8: Verify and record

Record who completed the turnover, products and concentrations used, start/end times, exceptions and verification results. ATP testing can provide rapid feedback on organic cleanliness when used consistently. Facilities may add targeted environmental microbiology based on their QA program.

Build the SOP around execution

The best turnover procedure is not the longest one. It is the one crews can execute correctly every cycle. Standardize dilution tools, labelled containers, PPE, checklists and replenishment so staff do not improvise at 5 a.m. on turnover day.

For a broader facility framework, use The Cannabis Biosecurity Playbook. For sticky post-harvest and cultivation residues, see REZOLVE Cannabis Resin Cleaner.

Always follow current product labels, SDS requirements, equipment-manufacturer instructions and facility QA procedures.