
Probably works well for most adult mites and is excellent for fat bloated mites that may already be carriers of disease but not very small mites or nymphs. I had a 1mm deer tick nymph that only stuck 30 minutes and was very difficult to remove with a tick wrench. The thinnest part of the tick key is about 0.75 mm. If you reduce it to 0.50mm or 0.35mm it works with the last 5%.

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