A granular product like Altosid Pro-G Mosquito Larvacide would have an advantage over the BTI Mosquito Dunks because the Altosid granules would disperse over a farther range than a mosquito dunk would cover.
We really couldn’t say what is happening to the dunks honestly. Per the product manufacturer of the BTI Mosquito Dunks the insecticidal toxins are a by-product of the bacillius thuringiensis in the dunks with is not harmful in any way to non-target animals. So if they are eating the dunks it should not harm them.
BTI Mosquito Dunks are only meant to be used in standing water areas like bird baths, ponds, etc. If you wanted to treat your lawn for gnats you would want to use an actual insecticide like Bifen I/T which is a clear drying insecticide that would last on the lawn for at least 30 days to give continuous control over the gnat population and would be completely safe for your pet to lay on once dry. Bifen I/T is used at the rate of 0.5-1 oz per gallon of water and can be sprayed on lawns, bushes, trees, hedges, flowers, etc for gnat/mosquito control.
You can use the BTI Mosquito Dunks directly in wading pools and they will not harm your dogs. These dunks will float on top of the water for several weeks so we would suggest that you take the dunks out of the pool while the dogs are in the water so they will not play with them or try to eat them.
The BTI Mosquito Dunks will not have any effect on the steel bars if they are used in the rainwater barrels.
The inert ingredient part of any product is a trade secret and not disclosed to anybody.
BTI Mosquito Dunks are solid and should not be dusty when using/applying, but if you have any concerns, you can wear a mask like our Valved Respirator Mask. You should also be wearing Nitrile Chemical Resistant Gloves when handling any insecticide products.
The BTI Mosquito Dunks should not be applied directly treated drinking water reservoirs or drinking water receptacles when the water is intended for human consumption as it would not be safe to drink the treated water.
BTI Mosquito Dunks are not labeled for use in water reservoirs you will be using to water edibles.
The BTI Mosquito Dunks should not be applied directly treated drinking water resevoires or drinking water receptacles when the water is intended for human consumption. They are labeled to be used in animal water troughs and bird baths.
Per the product label, BTI Mosquito Dunks should not be applied directly to treated drinking water reservoirs or drinking water receptacles when the water is intended for human consumption. It would not be recommended to drink the treated water.
BTI Mosquito Dunks can be used inddors in areas that collect water from time to time, such as basements that flood, sump pumps and any drainage areas withing buildings. Please refer to the product label for complete application instructions.
Since the BTI Mosquito Dunks dissolve in water, there is no need to apply another dunk in the water after cleaning the pond. Dunks last approximately 30 days and are safe for use around aquatic life and fish in ponds.
BTI Mosquito Dunks work best in areas of standing water and would not work where there is any running water.
BTI Mosquito Dunks need to be placed in standing water to be effective. If you need to treat the ground where water occasionally collects in pools or puddles, then we would recommend using Altosid Pro-G instead.
The other ingredients in the BTI Mosquito Dunks are inert and considered safe. They are proprietary to the manufacturer and are not required to be disclosed.
BTI Mosquito Dunks are placed in areas where there is likely to be standing water, such as bird baths, old automobile tires, rain barrels, abandoned or unused swimming pools etc. It is not meant to be placed in bathroom showers or tubs.
You should allow a minimum of 48 hours for control using the BTI Mosquito Dunks before removing. Each dunk provides 30 days or more of slow release control.
Per the product label for BTI Mosquito Dunks: "Do not apply directly to treated, finished drinking water reservoirs or to drinking water receptacles when the water is intended for human consumption."