Tank cleaners are important to ensure that spray booms and equipment is kept in good order and most importantly, that spray residues can be degraded prior to re-use in order to avoid contamination and potential crop damage.
Sulfonyl urea and phenoxy herbicides in particular can contaminate a spray and cause crop damage in very small quantities. They can remain in the spray equipment, and soak into scale, then be re-absorbed into the next spray.
A good quality COMPLETE tank cleaner and decontaminator can remove residues and break down of all of the active ingredients currently in use.
A good tank cleaner can also reduce the amount of chemical residue going into residue ponds on clean down of spray aircraft and equipment etc.