As someone who gives out clones at a patient resource center, I can tell you there is NO WAY to be absolutely sure a clone doesn't have mites.
We have had all kinds of situations arise. One guy thought he had gotten mites from us, but later realized they were in the cooler he took them home in.
Here in Oregon, mites are ubiquitous.
Portland is the 'Rose City'. Mites live on the roses.
Ever heard if Oregon blackberries? The mites live on them too.
They're EVERYWHERE, and nearly impossible to get rid of permanently.

At the resource center, we have a sign up that says...

[align=center]NOTICE!
These clones and cuttings were donated by
the members of Oregon Green Free.
They have been checked for bugs and disease.
However, there are no guarantees.
Please quarantine all new plants until you are
ABSOLUTELY CERTAIN that they will not bring
problems into your garden.

[align=left]This is good advice no matter where you get your clones.
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psteve Reviewed by psteve on . Shopping for Clones When you go to a club for clones is 6 the most you can buy? Ive read some posts on other sites and see sometimes people think they brought spider mites home and the club says not possible. Some people trust the plants genetics from certain people and know when its thier plant or not. So for example one person was saying no way thats my clones if its not in rockwool........and I was just wondering if anyone here knows who has bad clones that I should avoid? Having never been to the Rating: 5