Dc-645 ( formic pro)

When using above product for mites is there any harm in just using them automatically without doing any numbers counting first to see how bad the invasive species are ?
Thanks Matt

Has anyone used these " formic pro strips" listed in title above with any success or any info on using the product specifically with a flow hive setup?
I plan on using this in a day or 2 just for preventative maintenance/ helping hive be as strong as it can possibly be going into fall/ winter.
Thanks Matt