Sevin Concentrate cannot be applied to lawns. We recommend using Sevin Granules that are safe for the lawn and applied for controlling chinch bugs. Apply at a rate of 1.15 lbs - 11.50 lbs per 1,000 sq ft using a ground or hand spreader.
Yes, the Sevin Concentrate is safe to spray on apple trees. You would mix 3 oz. of Sevin Concentrate with a gallon of water and spray the upper and lower leaf surface and between fruit clusters and on small limbs and trunksto the point of runoff where pest appear. Repeat applications as needed fo up to 8 applications per year. To avoid undesired apple thinning delay use until at least 30 days after full bloom.
Sevin Concentrate can be used on sweet corn up to 3 days before harvest, per the product label, however this is not an organic product. You can use PyGanic Gardening on corn up to day of harvest for the adult insects. Please take a few moments to review this Extension article which has great information about this insect.
Sevin Concentrate is labeled for both psylids and leafminers. The exact amount of time it takes to kill an insect will depend on a number of factors, such as where the insect is in its life cycle and how long it spent in contact with a treated surface. You should start to see results in a few days, but reapplication may be necessary per the product label, especially if the infestation is severe.
Sevin Concentrate could be used on apricot trees for prevention and early treatment. Per the product label: Do not use on large trees or where pest populations are generally inaccessible to spray deposits, as inadequate performance will result.
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 to simply protect the surrounding trees with preventative sprays with a product labeled for such a use. There is a great read here by University of CA.
You will mix 1.5 fl. oz. of Sevin Concentrate with 1 gallon of water for boxelder bugs. The upper and lower leaf surfaces, small trucks and stems and twigs need to be sprayed to the point of runoff. Repeat applications may be necessary up to a total of four times a year for trees and six times per year for ornamental shurbs and flowers. Sevin Concentrate should not be sprated more than once every seven days.
If you have any additional questions, you are welcome to call us at 866-623-6917.