Josh from Miami, Fl writes
I have heard that mixing certain types of product in the same sprayer may negate one or the other. Something about repellents vs non-repellents.
It is always best to use separate sprayers for different insectices and/or repellants. However, if that is not an option then you can perform a "triple rinse". A triple rinse involves filling up your sprayer tank with clean water and spraying the entire contents of the sprayer out and repeating this process 2 additonal times. This is to ensure that the lines and tank are cleaned out completely as to prevent cross contamination.
Answer last updated on: 02/18/2014