The thing with spider mites is the eggs. They will hatch 4 to 7 days after most treatments.

The key ingredient that needs to be in any remedy for killing those eggs, is Dicofol.

Developed for industry. Can be used up to 7 days before harvest/injestion.

I found this product Kelthane and used it about 4 weeks ago. Watched eggs following treatment and sure enough they were nuked too. 100%.

Notes: I had caught the problem in a fairly early stage. Two branches only. If colonies have infested more branches and into flowers, then your results may vary.

Stuff is toxic and when you treat you cannot leave a single surface unsprayed, leaftops, leafbottoms, soil, anyplace.

The Kelthane did burn/shrivvel plant pistils some, but in early flowering anyway they've come back strong and purdy.