Ontario Beekeeper's Seasonal Calendar & Guide for Mite Treatment Strategies

A beekeeper in Ontario, Canada, is looking for advice on the best time to use Formic Pro for mite treatment and is curious about when to apply oxalic acid. This highlights the need for region-specific guidance. A handy resource like a laminated calendar, a detailed digital guide, or a short course designed for Ontario beekeepers could be really helpful. It would outline recommended mite treatments (like Apivar, Formic Pro, and oxalic acid), the best times to apply them based on the seasons and colony cycle, application methods, and local regulations. This would help keep bee colonies healthier, manage mites effectively and on time, and ensure everything is done according to regional guidelines.

Origin Reddit Post

r/beekeeping

Treating for mites

Posted by u/babamoomoo06/01/2025
In Ontario, Canada. We just picked up a nuc that has been treated with Apivar. We have formic pro for June/july (can someone confirm best time to treat with this one). We were told Oxalic a

Top Comments

u/stalemunchies
Check using a mite wash test. You essentially have to kill half a cup or 200-300 bees in a special strainer and count the mites that drop. Just youtube/google mite wash for a better how to.
u/AZ_Traffic_Engineer
The University of Guelph has a great series of videos on pest management. [THIS ](https://hbrc.ca/beekeeping-videos/)link gets you to their landing page, and [THIS ](https://hbrc.ca/pest-mana
u/awolflikeme
There's a mite wash test you can use to measure the mite count in your hive. I'd recommend that to get a sense of things after you've got a healthy population.

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