Strong user satisfaction and competitive pricing place it as a reliable mid-range option.
Price vs. rivals
Typical
CheaperTypicalPricier
This product is priced comparably to similar alternatives in its category, placing it at a typical mid-range position among popular peers.
Ease of use
Excellent 85/100
The product is a ready-to-use insecticide spray with a trigger nozzle, and the high user rating suggests straightforward application, though some may need to read label instructions for proper use.
Overview: Summit Chemical 117-6 Review
If you’ve got standing water that you can’t drain—a bird bath, a rain barrel, a decorative pond—mosquitoes will find it and breed. The Summit Chemical 117-6 review consensus is that it’s the simplest fix for that exact problem: a granular larvicide you sprinkle once a month, no mixing, no spraying, no worrying about hurting the birds or fish. At about $15 for a 30-ounce container, it’s cheap enough to try and specific enough to work where foggers and sprays don’t.
This isn’t a “kill all the bugs” product. It targets mosquito larvae using a naturally occurring bacterium (Bti) that only affects them. So if you’re tired of seeing wrigglers in your bird bath and want something that doesn’t smell like chemicals or require goggles, this is the category leader for a reason.
Key Features
Bti active ingredient – Bacillus thuringiensis israelensis is a bacteria that specifically kills mosquito and fungus gnat larvae. It’s safe for people, pets, birds, fish, and plants because it only works on a few insect species.
Granular, slow-release formulation – Unlike quick-dissolving bits, these granules sit at the water’s edge and release the bacteria gradually over about 30 days. You don’t have to remember to add more every few days.
30-ounce container – That’s enough for several months of regular use in a typical bird bath or a small pond. A little goes a long way—about a tablespoon per 10 gallons.
Works in standing water only – It’s designed for still water where mosquitoes lay eggs. Won’t work in a stream or fountain with constant flow, so don’t expect miracles there.
No scent, no residue – The granules just sink or float along the edges. They don’t turn the water cloudy or leave an oil slick. You’ll barely notice them.
Fit for You
You keep a bird bath and are tired of dumping it out every three days to break the mosquito life cycle.
You’ve got a rain barrel and want to use the water on your garden without giving mosquitoes a nursery.
You have a small ornamental pond with goldfish or koi that you can’t treat with chemical insecticides.
You water livestock from a trough and need something that won’t hurt the animals but will stop the larvae.
You live in a neighborhood where everyone’s complaining about mosquitoes and you want to do your part without fogging the whole block.
You’ve tried mosquito dunks but found they take too long to dissolve or break apart too quickly.
Uses
Sprinkle the granules around the edge of your bird bath, right where the water meets the rim. A tablespoon or two is plenty. Within a day, you’ll stop seeing those little wrigglers that look like tiny commas. The effect holds for about a month, but if you get a heavy rain that overflows the bath, you’ll want to reapply because some granules get washed out.
For a rain barrel, toss a spoonful right into the opening once a month. The granules sink to the bottom and release the bacteria as they sit. That water is still safe to use on veggies, flowers, and lawns—Bti doesn’t stick around in the soil.
In a small pond, sprinkle the granules along the shoreline, away from any filter intake. The bacteria stays in the top layer of water where larvae live. If you have a waterfall or pump that circulates water fast, this won’t work—the bacteria gets diluted or filtered out.
Experience
You open the container and it smells like… nothing. Just dry, tan granules that look like coarse sand. No chemical odor, no need for gloves. You measure out about a tablespoon—the cap works fine as a scoop—and scatter it along the edge of your bird bath. Some granules float, some sink. Within hours, the water is still clear, no cloudiness.
The next day you check and the larvae are gone. Not dead floating on the surface—just gone. The bacteria stops them from feeding and they die and get eaten by whatever else is in the water. You don’t have to touch anything, and you don’t have to remember to do anything for another three to four weeks.
Annoyances? The granules are light. If you have a strong wind right after application, some might blow away before they hit the water. You can press them into the mud at the edge if that’s an issue. And if you have a plastic bird bath with a shallow lip, the granules can sit on the dry rim and never make it into the water—so make sure you actually toss them into the water, not just near it.
Storage is simple: keep the container sealed in a cool, dry place. The granules don’t cake or clump, and they stay effective for years. The only thing you’ll miss is any kind of instant gratification—this prevents future mosquitoes, it doesn’t kill the ones already flying around your yard.
Pros and Cons
Pros
Safe for birds, fish, and pets – Because the bacteria only affects mosquito and fungus gnat larvae, you can use it around wildlife without worry. That’s the whole reason it works for bird baths.
One application lasts a month – Set it and forget it. Most people check once a month and reapply after heavy rain.
No mixing or measuring fuss – Just eyeball a tablespoon per 10 gallons. No sprayer, no gloves, no cleanup.
Very inexpensive per dose – A $15 container lasts a whole season for a typical bird bath user. Cheaper than mosquito dunks over time.
Doesn’t affect bees or butterflies – Unlike broad-spectrum insecticides, this stays in the water and only targets larvae. Your pollinators are safe.
Cons
Only kills larvae, not adult mosquitoes – If you already have a cloud of biters in your yard, this won’t help directly. You need to use it preventively.
Needs reapplying after heavy rain – A downpour that floods the container or overflows your bird bath will wash the granules out. You have to pay attention to the weather.
Doesn’t work in moving water – Ponds with pumps, fountains, or streams will dilute the bacteria too fast. It’s only for still or very slow-moving water.
Granules can be messy if you’re not careful – They spill easily and are hard to sweep up. Best to sprinkle directly into the water, not on surrounding pavement.
Not a quick fix – It takes 24–48 hours to see full effect. If you’re impatient, you might think it failed, but it just needs time to release the bacteria.
Advantages
Over mosquito dunks: dunks are big, take days to fully dissolve, and you have to tie them in place. The 117-6 granules are smaller, easier to measure for small water volumes, and you don’t have to buy a net or a string.
Over liquid larvicides: no measuring concentrated liquid, no risk of spilling a chemical on your skin, and no smell. The granules are dry, stable, and last longer.
Over mosquito Bits: Bits work faster but only last 7–14 days. The 117-6 is the same active ingredient in a slower-release format, so you apply less often. If you want best mosquito control for bird baths with minimal effort, this is the granular version that wins on convenience.
Over spray-on repellents or foggers: those only protect people temporarily and don’t reduce the mosquito population. This reduces the number of new mosquitoes hatching in your yard.
Who Should Buy
Buy it if: you have a bird bath, rain barrel, or small decorative pond and want to stop mosquitoes without chemicals. You’re okay with a once-a-month routine and understand it’s not an instant adult mosquito killer.
Buy it if: you’re looking for a product that’s safe for pets, wildlife, and kids playing near the water. This is the go-to for families.
Skip it if: you need to kill swarms of adult mosquitoes right now. You’ll want a fogger, bug zapper, or a professional spray instead.
Skip it if: you have a large farm pond or a fast-moving water feature. For those, consider mosquito dunks (for slow-moving edges) or a different approach entirely.
Skip it if: you want a single product that handles both standing water and damp soil. For damp soil, Mosquito Bits are better because they break down faster and target fungus gnats in potted plants.
FAQ
Is the Summit Chemical 117-6 worth it?
If you have standing water that you can’t drain, yes—it’s one of the most cost-effective ways to prevent mosquitoes from breeding there. Around $15 for a season of protection in a bird bath is a good deal, especially compared to buying container after container of sprays.
Summit Chemical 117-6 vs Mosquito Bits: which should I choose?
Both use the same Bti bacteria. The 117-6 is a granular slow-release formula that lasts up to 30 days in still water, while Mosquito Bits dissolve faster and work in 7–14 days. For bird baths and rain barrels, the 117-6 is less work. For fungus gnats in houseplant soil or temporary puddles, Bits are better.
How do you use Summit Chemical 117-6?
Shake the container, then sprinkle about one tablespoon per 10 gallons of water around the edge of the standing water. No mixing or dissolving needed. Reapply after heavy rain or every 30 days. That’s it.
Is it safe for birds, fish, and pets?
Yes, because the bacteria only affects a narrow range of insect larvae, mainly mosquitoes and fungus gnats. Hundreds of customer reviews mention using it around pet bowls, koi ponds, and chicken waterers without any issues.
How long does it last?
One application typically works for 30 days in calm water. If you get a downpour that overflows your bird bath or rain barrel, the granules wash out and you’ll need to reapply sooner. Under normal conditions, once a month is enough.
What is the best mosquito control for bird baths?
For a bird bath specifically, Summit Chemical 117-6 is the easiest solution because you just sprinkle and forget. A single tablespoon keeps a standard bird bath mosquito-free for a month, and it won’t harm the birds that drink or bathe there.
Final Verdict: Summit Chemical 117-6 Review
This is a focused, no-nonsense product for a specific problem. It won’t solve your entire backyard mosquito issue, but for standing water that you can’t or won’t drain, it’s hard to beat. The granular format is way less fuss than dunking a tablet or mixing a liquid, and the safety profile is exactly what you need around pets, birds, and kids.
The one thing to keep in mind: use it preventively, starting early in the season, not after you’re already slapping mosquitoes. If you do that, the Summit Chemical 117-6 is exactly the workhorse most people need for their bird baths, rain barrels, and small ponds.
It’s the most common question you’ll have when you notice mosquitoes breeding in your bird bath: which larvicide actually works without killing the birds or turning the water into a science experiment. Summit Chemical 117-6 is a liquid BTI concentrate—a teaspoon treats up to 50 gallons—which makes it one of the most flexible options on the shelf. But it’s not the only player. Mosquito Dunks and Mosquito Bits come from the same family, and then there’s a liquid like Microbe-Lift that claims similar coverage. The choice comes down to how often you want to reapply, what you’re treating, and whether you care about measuring stuff.
Product
Price Range
Key Strength
Key Weakness
Best For
Summit Chemical 117-6
Mid ($14.97)
Highly concentrated liquid; one bottle lasts a season for multiple bird baths
Requires measuring; liquid can spill or freeze
Bird baths, rain barrels, any small standing water you want to treat on your own schedule
Summit Mosquito Dunks
Mid ($10–$12 for 6-pack)
Zero measuring; drop a donut in and forget it for 30 days
Slow to dissolve; not great for tiny water volumes or quick knockdown
Ponds, large rain barrels, livestock troughs where long-term laziness wins
Summit Mosquito Bits
Mid ($12–$15 for 30 oz)
Fast-acting granules—kill larvae within hours; easy to sprinkle
Needs reapplication after rain or every 7–14 days; can clog fine nozzles
Water gardens, potted plant saucers, areas with heavy mosquito pressure
Microbe-Lift LP
Prem ($20–$25 for 4 oz)
Extremely concentrated; 1 drop per gallon—no measuring spoon needed
Premium price for small bottle; less known than Summit, harder to find locally
Pond owners who want a liquid that works in freezing temps and doesn’t foam
Summit Chemical 117-6 vs Mosquito Bits: Speed vs Simplicity
If you’ve ever dumped a handful of Mosquito Bits into a bird bath and watched them float around like tiny brown snowflakes, you know the appeal: instant gratification. Bits kill larvae in a couple of hours, and they’re dumb-proof—just sprinkle until the water looks like it’s seasoned. But here’s the catch: Bits break down fast. After a heavy rain that overflows your bird bath, or a week of sun bleaching the water, you have to repeat the sprinkle dance. The 117-6 liquid, on the other hand, stays active for weeks if you don’t dump the water. One teaspoon treats 50 gallons—that’s about 30 standard bird baths. So if you’re treating a single bird bath, you’ll be making tiny, fiddly measurements with a dropper, which can be annoying. But you won’t be running to the store every two weeks. Bits are for people who “just want to squirt and forget” but actually remember to do it again. 117-6 is for the person who wants to calculate once and then not think about it.
Summit Chemical 117-6 vs Mosquito Dunks: The “Drop It and Leave It” Trade-Off
Mosquito Dunks are the easiest product to recommend to someone who has a pond or a rain barrel they never clean. You float a donut-sized ring, it slowly releases BTI for a full month, and the birds don’t care. But if you’re reading this because you have a decorative bird bath that gets refreshed every few days, a Dunk is overkill—and actually wasteful. You’d have to break off a piece, and that piece might fall apart or get dumped when you scrub the basin. The 117-6 liquid lets you add a tiny dose right after you refill, no floating trash, no waiting for a chunk to dissolve. The Dunk wins for sheer laziness on large, static water. The liquid wins if you like to swap out water for aesthetic reasons or if you have multiple small containers that need different schedules. Also, Dunks take a few days to reach full potency; the 117-6 kills within a day. If you have active larvae squirming right now, you want the liquid or the Bits, not the Dunk.
Summit Chemical 117-6 vs Microbe-Lift LP: When Concentration Gets Premium
Microbe-Lift LP is the liquid that pond Keepers swear by because it stays viable in near-freezing water, and the bottle is tiny enough to hide in a toolbox. One ounce treats 8,000 gallons—you need a pipette just to apply it. The 117-6 is cheaper per dose if you’re treating bird baths, but Microbe-Lift’s concentration means a single bottle lasts years for casual use. The annoyance with Microbe-Lift: you have to buy it online unless you live near a specialty pond shop, and the measuring is so absurdly small that you might accidentally overdose and turn your bird bath into foam city (ask me how I know). The 117-6 is easier to find at hardware stores and garden centers, and its lower concentration actually makes measuring less error-prone for backyard use. Microbe-Lift is for the person who has a serious pond and wants to buy once, cry once. Summit 117-6 is for the person who wants to buy at the local Ace and treat a half-dozen containers without doing math in their head.
Who Should Buy It—and Who Shouldn’t
Pick the Summit Chemical 117-6 if you have multiple bird baths, rain barrels, or any standing water you change or clean regularly. You like having control over the dose, you don’t mind a dropper for a few seconds, and you want a product that kills larvae fast but stays put for weeks. Avoid it if you hate measuring anything liquid, if your water source gets totally replaced every day, or if you just want to lob something into the water and walk away. In that case, go with the Mosquito Dunks—they’re lazier, cheaper upfront for small volumes, and nearly impossible to mess up. And if you’re in a real hurry, the Mosquito Bits kill faster than both, even if you have to reapply more often. The 117-6 sits right in the middle: not the fastest, not the longest-lasting, but the most adaptable to whatever weird water-collection setup you’ve got.
Ready to decide on the Summit Chemical 117-6?
See today’s price, stock and delivery options on Amazon.
