Monsanto Pesticides and Waste Regulations

 This note details how Monsanto products are classified under the Waste Framework Directive, 2008/98/EC and offers useful advice for farmers on the waste production involved in the use of our products and their obligations under the Environmental Protection, (Duty of Care) Regulations, (as amended), 1991.


  • Choose high-load modern Roundup formulations which reduce the number of cans or bags used over standard 360 g/l formulations.
  • Choose products not classified as hazardous where possible.
  • Always use sprays from the store in rotation to avoid the need to dispose of out of date agrochemicals, which are Hazardous waste*.
  • Always rigorously triple rinse** containers to avoid classification as Hazardous waste*.
  • Some products are available in bulk containers, (IBCs). These should not be classified as waste by the farmer, but returned to Monsanto for re-use.


All European Waste Catalogue, (EWC), categories with * are classed as Hazardous waste and come under the Hazardous Waste Regulations. Not only is Hazardous waste an average of four times more expensive to dispose of, but also farmers will only be exempt from registering as a Hazardous Waste producer if they produce less than 500kg per year in total.

Farmers should use pesticide stocks in a rotational way to avoid keeping pesticides which are no longer approved and need to be disposed of. They should rigorously empty and triple rinse all containers to keep their hazardous waste production below the 500kg threshold.

Storage of waste on farm is allowed for up to 12 months and the Landfill Directive prohibits untreated business waste being sent to Landfill. Separation and recycling of plastic and cardboard waste means the residue can still be sent to landfill. Many farmers use a national collection and recycling scheme or take their waste to a disposal site themselves. Either way under the regulations they have a Duty of Care to secure their waste, only pass it on to someone who is authorised to take it, fill in a Waste Transfer note and keep it for two years.

In order to fill in an Agricultural Waste Transfer Note, farmers must self-classify the waste according to the European Waste Catalogue, (EWC).

  • Uncontaminated cardboard outer boxes containing pesticide packs are classed as paper and cardboard packaging, EWC 15-01-01
  • All Monsanto liquid herbicides are supplied in plastic drums which should be triple-rinsed on emptying according to Best Practice and The Code of Practice for Using Plant Protection products, 2006**. They are then classed under the EU Waste Catalogue as ‘Plastic packaging’, EWC15-01-02
  • Roundup PowerMax is Monsanto’s only granular pesticide and these bags are also classed as ‘Plastic packaging’ EWC 15-01-02. They do not need to be triple-rinsed but should be ‘emptied, shaken and inspected for cleanliness.’
  • Un-rinsed containers and pesticide contaminated cardboard, where the pesticide is classed as Hazardous are EWC15-01-10* and if they contain unclassified product are EWC15-01-02
  • Pesticide concentrate or residues are classed as ‘Hazardous Waste’ ECW 02-01-08* if the product is classed as Hazardous and ECW 02-01-09 where the product is unclassified. Since the introduction of CLP the classification of products has changed. For current products with (H319) waste is hazardous only if the product comprises 20% or more of the waste material. For those classed as or with H statements H400,H410,H412 or H413 waste is hazardous where product comprises 25% or more of the waste.

Roundup pack type

Plastic waste Kg

Cardboard waste Kg

20 litre can



15 litre can



10 litre can



5 litre



Roundup Powermax bag



Cardboard outer from box of 4x5l or 2x 101 cans 




** Triple rinsing is the only way to be sure containers are clean. Beware: many Pressure Rinsing Devices factory-fitted to sprayers may not operate at a high enough pressure to remove all residues.

Triple rinsing procedure

1. Fill the emptied container 10 – 20% full of water
2. Replace the cap securely
3. Depending on container size shake, rotate or roll it vigorously to rinse all inside surfaces
4. Remove the cap, add the washings to the spray tank
5. Repeat steps 1 to 4 twice more, ensuring complete drainage on the last emptying.
6. Put the cap back on the container and store safely for disposal


Roundup products contain glyphosate.
Roundup is a registered trademark of Monsanto Technology LLC.
©Monsanto UK Ltd 2017 (MS)
For more details contact the Monsanto Technical Helpline on (01954) 717575
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