Sierra Natural Science - 217c - Concentrate Pouch - 6 fl oz (177.44 mL) Makes up to 32 fl oz

Used it to control a spider mite infection in an indoor garden. Used two applications, but there was no sign of life after the first. I’ve had trouble safely eradicating mites before without damage to plants, consumer or environment. The SNS 217c was instant kill. No chemicals. Just rosemary extract. I found the rosemary scent very pleasant. Not sticky or messy at all. Didn’t hurt the plants at all. The only way I would like it more is if it were less expensive. It’s a great product and it’s priced accordingly.

This stuff is pricy but better on spider mites than all the other products I've tried. It's hard on blooms and stunts bloom growth for a few days. Try to catch infestations before your plants flower. Spray every bit of the plant, and repeat after a few days at least twice. Mites lay eggs on the underside of leaves, if you miss a spot they will come back! A pint doesn't go very far but don't be stingy with it. It makes 6 pints of spray. I keep a pint of concentrate in the fridge so I can respond quickly at the first sign of mites. They multiply unbelievably fast.

I love this stuff nothing gets rid of spider mites and fungas gnats like this stuff.

It works when applied directly to the mite as do most all, but there are others out there at less a price.

This stuff is AMAZING! Worth the money and totally solved my problems! I got infested with spider mites after not checking some cuttings I received. They all but took out a few of my plants and I was about to throw in the towel. After using the product the first application I noticed a change in the mites numbers and the leaves I had left were slightly glossy and healthy looking. You could see the remains of little blacken husk under the leaves and since the product claims to kill eggs too, no fear of reinfestation. In fact it's been almost 3 weeks and I'm still clear. Will update in a few more weeks. Since then ive been grooming the dead leaves and watching my plants on the mend, mite free. I teamed with the 209 product to add it to the substrate for the extra protection. Caution, one bottle of the 217c makes less than a gallon so I bought a 2nd bottle for back up but haven't had to use it. Just mix and mist the plant up and down. I couldn't be any more pleased. I also grow with LEDs and haven't noticed any burning or risk of burn. Plus... the smell is soooooo much better than Neem oil which was a total fail for me.

Came pretty fast and was a good price And yes it’s effective I’ve used it many times at least 10 years now I’ve been using this when needed of course one hopes too never need this in their garden but Trust me it always gets rid of those critters.

This product is GREAT, it's organic and can be sprayed 20 mins before harvest. You wouldn't necessarily do that but it is a product that doesn't harm because of the main active ingredient is a food grade Rosemary oil. It does wonders on bugs, it also kills the eggs of the bugs you're after, which most if not all Neem Oil based product don't.

The product was so ineffective that it makes me wonder whether this is a scam. We mixed the concentrate as per the instructions and proceeded to soak the top and underside of every single leaf on our plants. A careful inspection two days later revealed that the mite population was thriving unabated! Healthy, happy adults were feeding on the topside of the leaves and freshly hatched juveniles were gestating on the undersides. This means that not only did the product fail to kill the adults, it also failed to prevent eggs from hatching. A complete and utter failure to fulfill either of the product's claims. Furthermore, it should be noted that the concentrate mixes to make only .75 gallons of usable solution. That's a fairly small amount of solution for 54 dollars worth of "concentrate." In short, SNS 217C is completely ineffective and overpriced.