There are methods used to identify the presence of the Varroa mites as follows:
Take out drone offspring once existing and visually check larvae and cells for mites. They are detectable against a light colored background.
Fill a quart jar roughly 1/4 full of live bees. Cover and insert a 2-second blast from an aerosol ether-based engine starter fluid or aerosol oil cooking spray. Shake the jar for twenty seconds. Turn the jar on its side and spin little by little and look for mites clinging to the sides of the pot. If you do not notice any mites, take out the bees and rinse in alcohol. Shake and remove the bees so you can study the alcohol.
The best and most unfailing way is to use Apistan (fluvalinate) strips or US: Check Mite+ strips.. Place a piece of waxed or white paper sprayed along with aerosol oil cooking spray and covered along with eight by eight squares/inch of mesh wire on the bottom board. Put in strips as per brand directions. Inspect the paper within one hour. If there are no mites, check for a second time the following day.
You may possibly ask for a free inspection from you area NCDA bee inspector.
By no means cure through a nectar flow as the elements can infect the honey and by no means leave strips in hives as soon as the recommended time this could initiate sublethal doses of the element. Therefore, so as to save your colony, you could heal it if you spot mites.
In previous years mite have become resistant to Apistan strips and has become a difficulty all through the world. Thus, rotating substance, delaying medication and utilizing cultural control are recommended to manage mites in a more manageable method.
Suspending cure may perhaps be accomplished if you keep an eye on the degree of Varroa mite influx within your colonies. There are ways to test the colony for the quantity of mites present. Knowing the intensity of infestation in your colonies will help you determining whether remedy is necessary at once or if it may possibly wait until after the nectar flow season has passed.