Generally, obsolete or unwanted pesticides should be disposed of as hazardous waste in a safe and environmentally sound manner according to relative legislation. It must be noted here that old pesticides mentioned in this study refer only to small quantities of pesticides, although some farmers tend to purchase greater quantities to achieve a lower price. Pesticides can only be reused if they meet the following criteria: they have not been banned and are approved for use
in that territory, they are in good chemical and physical condition so that they are still effective as pesticides and will not pose an unreasonable hazard to health or the environment if they are used, the pesticides are in an appropriate
form for end users to handle and apply them. Decisions regarding the chemical and physical state of the chemicals, their efficacy, repackaging, formulation or transport should only be made by specialists in appropriate fields who have access to analytical equipment and other testing facilities. In general these questions should be referred to the manufacturer of the pesticides or experienced pesticide chemists, together with independent advisors who do not have a commercial interest in the products or their fate. Burning old pesticides in open fire or burying old pesticides should not be used as a method of management of old pesticides for the same reasons discussed earlier.