It is possible that Archer IGR could stop the lifecycle of earthworms even though it is not labeled for them. Earthworms are considered beneficial insects and will not be found on any label.
We do carry green products, such as Essentria IC3, which is made with items that naturally occur in nature, such as rosemary and peppermint oil. This will likely last about two weeks outdoors because it will break down in the elements outdoors more quickly then a synthetic product.
Archer IGR should NOT be applied directly to any animal including dogs. Please check out our Flea Treatment Products that are safe for applications on pets.
Yes, Archer IGR also has a 7 month residual for ticks. Please see our tick guide for more information in treating: How to get rid of Ticks.
Archer IGR would be mixed at .5 to 1 oz per gallon of water. You can mix Bifen IT, Archer, and Exciter together in the same mix everytime you spray. Both Archer and Bifen can be used every 14 days outdoors for active infestations. Exciter is a quick contact kill only so can be used more often if needed.
Once Archer IGR is dry, it is safe the dogs to be on the lawn and chew the grass.
We would recommend treating the entire lawn. Archer IGR is labeled to be used in pet dwellings so this will be safe to use there as well. We would also recommend using an insecticide with Archer IGR, such as Onslaught. Archer IGR is just a growth regulator. It will not kill the fleas. It will only stop them from reproducing. Please let us know if you have any additional questions.
Archer IGR and other IGRs will leave a residual after it has dried. It retains activity against pre-adult fleas for up to 7 months.