Sevin Concentrate is labeled to treat bark beetles. The label states it should not be applied to trees larger than 10 feet tall; this is possibly because doing so would not apply an adequate amount of product to the trunk to be effective in killing insects that contact it. When treating for bark beetles, it is recommended to spray up to 15 feet high since generally they do not go much higher than that. You can use a product like Permethrin SFR to do so. Unfortunately, once the borers have already infested the tree there are not any viable treatment options as they would be protected from sprays. In cases of infestation, the general recommendation is simply to protect the surrounding trees with preventative sprays with a product labeled for such a use. Infested trees will need to be trimmed and/or completely removed.
Sevin Concentrate should be used within 24 hours of diluting with water for the most effective results.
Sevin Concentrate is not systemic so is not absorbed by the plants. It is labeled to control many varieties and species of caterpillars so would kill any that feed off the plants foliage or areas that have been sprayed.
Unless otherwise noted on either product label and as long as you do a tank mix test, Sevin should be able to applied with fertilizer.
Sevin Concentrate is not labeled to control slugs. The product we usually recommend for slugs is Monterey Sluggo Plus Snail & Slug Killer.
Sevin Concentrate should just be applied until the plants are wet and slightly dripping.
Yes, the Sevin Concentrate is labeled for plum curculio.
Sevin Concentrate is a liquid concentrate that you dilute with water. It is not labeled for drenching or for use on houseplants or other containerized plants. If you need a product for containerized plants to treat insects like aphids, mealybugs, etc., then you can use Bonide Systemic Granules instead.
Sevin Concentrate is not labeled to treat orangedog caterpillars.