PHONETOOL
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Sluggo Snail & Slug Control For Organic Gardening

I was thinking about purchasing some of this but then I found this article
Does anybody have any more information and what do you think is it safe?

Iron phosphate is non-toxic to both humans and dogs, as well as other pets and wildlife. Studies also show that it is equally non-toxic to slugs and snails, because it does not release its load of poisonous elemental iron very easily. If this is the case, why do other studies show that it is a very effective product that rivals the metaldehyde baits? How can these baits made of nothing but iron phosphate and wheat gluten be as effective as they are shown to be when other studies show that snails can live indefinitely on a diet of iron phosphate?

Enter a man-made chemical called EDTA, a chelating agent that causes the iron phosphate to release its elemental iron easily in the digestive systems of not only slugs and snails but of pretty much anything that eats it. EDTA or the similar EDDS are the only reason these baits are effective, yet interestingly the label only reads Active Ingredient: Iron Phosphate - 1%, Inert Ingredients - 99%. No mention is made of the presence of another chemical that can turn harmless iron phosphate into a deadly poison. Apparently EDTA was slipped through the cracks in our regulatory system as an "inert" ingredient, and inert ingredients do not have to be listed on the label. Since iron phosphate is harmless, and EDTA is the ingredient that makes it effective, not to mention dangerous, something is really wrong here.

Missing from most of the literature about iron phosphate slug baits is their mode of action - the "how" of what they do. Some trying to write about them even say that the mode of action is not well understood. Once you know that EDTA is present in the bait, the mode of action becomes clear pretty quickly - iron poisoning. In Australia, these baits are labeled as containing EDTA. An article about them contains the following mode of action description:

"Iron chelates can be incorporated into bait, which is palatable to the mollusc and it appears that at an appropriate location in the mollusc's gut the iron is released as Fe3+, and is toxic causing death if the concentration is sufficiently high. A number of chelates are efficacious, particularly those belonging to the group of compounds referred to as complexones, but to date the iron EDTA complex formed by the reaction of ferric EDTA with hydroxide ions is the most effective on the basis of the total iron concentration. A number of iron complexones have been shown to be effective."

A review of these products by the Swiss organic certification organization (FiBL) discovered the EDTA content and stated that these products were likely no safer than the metaldehyde baits, that EDTA itself was significantly more poisonous than metaldehyde, and even said they weren't even sure that it wasn't the EDTA alone that was killing slugs and snails. When I started posting the link to that study and warning people about these baits, the report was quickly removed from the website that hosted it. It is referenced in the Ohio State study, though. A graphic comparing the toxicity of EDTA and metaldehyde was also taken down.
The actual effect on slugs and snails does seem to be iron poisoning from what I can find. The referenced pet poisonings also seem to be the result of iron poisoning, from iron freed up from the iron phosphate by EDTA.

The above is only highlighted info

For the full article use the link below

https://www.hostalibrary.org/firstlook/R ... sphate.htm

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j3707
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Location: Pacific Northwest, Zone 8, 48" annual rainfall, dry summers.

Check out the National Pesticide Information Center on Iron Phosphate:

https://npic.orst.edu/factsheets/ironphosphategen.html
Iron and phosphate ions are found in many foods naturally. Iron phosphate is used to fortify foods such as bread. Other foods, such as pasta, milk, and beverages, are also fortified with forms of iron. Iron phosphate is Generally Recognized As Safe (GRAS) by the Food & Drug Administration (FDA). However, dogs have become sick after eating large amounts iron. This happens when vitamins, fertilizers, or slug baits are accessible.

Wikipedia sez,
Research indicates that under many conditions, EDTA is fully biodegradable. However, when simulating certain non-optimal degradation conditions (high pH), less than 1% of the EDTA was degraded instead to ethylenediaminetriacetic acid, which can then cyclize to 3-ketopiperazine-N,N-diacetate, a cumulative, persistent, organic chemical with unknown effects on the environment.
From WebMD,
In foods, EDTA bound to iron is used to “fortify” grain-based products such as breakfast cereals and cereal bars.
Sluggo is basically iron fortified cereal.

I use the stuff, it works.

imafan26
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Location: Hawaii, zone 12a 587 ft elev.

I also use it, it does work. Methaldehyde does actually work faster that sluggo, but it is definitely more toxic.
I do alternate the baits, do a lot of slug and snail hunting when I am watering and check in and under pots which are popular hiding places. I don't do the yeast bait much because I don't like to clean out the traps very much. I do use hair and eggshells to slow them down. I did use diatomaceous earth, but not much anymore because it isn't very helpful after rain. Now, if anyone has an extra toad, please send one my way.

cynthia_h
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Location: El Cerrito, CA

Thank you for this background info, even though I've just now seen it, many months after it was posted!

Ever since the CheckMate insecticide incident in California in 2008-2009, where the "inert" carrier chemicals were indeed found to be at least 8 times more toxic than the declared active pheromone which would target the Light Brown Apple Moth, I've made it a personal policy not to use anything where a huge majority, say 99%, of the ingredients are undeclared, so-called "inert" ingredients.

Like Sluggo.

Cynthia H.
Sunset Zone 17, USDA Zone 9

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vegetablesteve
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Location: Belgium

after reading all this, I'm really happy to have lots of toads in the garden.
Also, I don't mind cleaning yeasttraps :wink: (as long as there 's no beer wasted)

greets,
vegetablesteve

DoubleDogFarm
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Quack quack quack. Quack quack quack. Quack quack quack.


Eric

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vegetablesteve
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Location: Belgium

I've heard that using quack quack quack's can ruin your plants too.
Don't you have that problem? Would be nice to know, then I can try it too. I love animals

greets,

DoubleDogFarm
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Ducks can be very destructive. Especially if they are hungry. I have a Muscovy drake that hops and pulls down branches and canes. Fruit, berries, leafy greens and even young tomato plants are all fair game. If I feed them a 16% layer pellet, they just lie in the shade. :wink:

Eric



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