Question 1

Why do I still see fungus gnats flying around after one week post-application? I thought it killed anything that ingested the pesticide?

Accepted Answer

Treating fungus gnats requires a multi-prong approach to address all stages of its lifecycle (egg, larvae, pupae, adults). Treatments are not a "one-time only" kind of thing.  What you see flying around is the adults whose main goal is to lay eggs in the moist soil. The adults do not feed on the plants so this insecticide does nothing to kill them. Adults generally live about a week but will lay approximately 300 eggs in that time.  When the larvae emerge, they live in and feed on the organic matter in the soil for about 2 weeks. My understanding is that most types of fungus gnats do not feed on the plant roots if there is sufficient organic matter in the soil. So, again, this systemic insecticide won't kill the larvae if they are not eating the roots. It is not until they become adults that they emerge from the soil and then the cycle begins again.

Here is what I do to address fungus gnats:
- Provide gentle airflow in the room and use well-draining potting soil to allow the soil to dry out sooner. I add extra perlite to almost all bagged potting soils for my indoor plants. Try not to overwater.
- Keep yellow sticky traps around my plants at all times. These catch and kill the adults. When I had a bad infestation, I put lots of the sticky traps in my pots and changed them as they filled up with gnats. Now I just keep one trap near the plants as a way to monitor for the presence of any pests. 
- Use "Mosquito Dunks" or other similar products that contains BTi (Bacillus Thuringiensis subspecies Israelensis) as a soil drench. BTi is a naturally occurring bacteria that kills the larvae of both mosquitoes and fungus gnats but is safe for people and pets. Soak half of a "Mosquito Dunks" donut in a gallon or so of water overnight. Use this solution to water the plants. Make sure to thoroughly drench the entire soil surface, especially around the sides/edges of the pot. With an active infestation, it is necessary to reapply the solution at least weekly for a minimum of 6 weeks to stop the lifecycle. You will initially see a decrease in fungus gnats but do not be deceived! If you only treat 1-2 times, they will return. The "Dunks" can be reused many times. 
- As a preventive measure, I use the "Mosquito Dunks" soil drench at least once a month to replace one of my regular waterings. Between doing this and monitoring the sticky traps, I no longer have problems with the annoying little creatures.

Question 2

does this product take care of red spider mites ?

Accepted Answer

No.  Spider mites are not insects they are mites.  Regular insecticides will not kill spider mites and sometimes makes them worse.  You have to use a miticide, neem oil but watch what you put that on it will kill or burn some plants or try Murphy's oil soap or dish soap mixed with water.  Reapply in about 5 days to kill any newly hatched eggs.

Question 3

Does this product get rid of scale?

Accepted Answer

Yes it will get rid of scale because scale is an insect

Question 4

will this product kill bagworms?

Accepted Answer

No, Bonide Systemic granules are not labeled for bagworms.

ASIN	B000BWZ9U8
Active Ingredients	Imidacloprid
Best Sellers Rank	#1,115 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #94 in Insect & Pest Repellent Sprays
Brand Name	Bonide
Customer Reviews	4.6 4.6 out of 5 stars (6,812)
Global Trade Identification Number	00037321095347
Included Components	Bonide Insect Control Systemic Granules, 4 lbs. Ready-to-Use
Item Form	Granules
Item Type Name	Bonide - 95349
Item Weight	16 ounces
Liquid Volume	4000 ml
Manufacturer	Bonide Products LLC
Model Number	95349
Part Number	95349
Special Features	Ready-to-Use
Target Species	Insects
UPC	037321095347 617407730203
Unit Count	64 Ounce

Bonide Insect Control Systemic Granules, 4 lbs.

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