You could rotate Sevin Concentrate every 7-14 days as long as you do not go over the maximum number of applications per year you can apply as listed on each product label.
Yes, Sevin Concentrate is labeled to kill stink bugs and many other insects on a variety of vegetables which include tomatoes and squash.
Bayer Advanced All In One Rose and Flower Care treats for many types of pests. Is there a pest that it is not labeled for? We see no reason to apply both. We would not recommend applying both to Roses at the same time.
Sevin Concentrate is applied at 4 oz per gallon of water and applied with a Hand Pump or Hose-End Sprayer for chafers.
Sevin Concentrate will kill the adult termites that are sprayed with the product. It will not replace a termite soil treatment around the perimeter of the structure. There are products that you can use to treat in the tree directly. Just keep in mind that termites are there because the tree is already dead or dying, so be sure to take down dead trees before they cause other damage. You could use Alpine Ant and Termite Foam to spot treat exactly where the galleries are in the tree. This product has a foaming agent to help coat the inside of any voids. Alternatively, you could use Dominion 2L as a spray, again treating inside the galleries directly. We would recommend using a termiticide like Taurus SC against the foundation in a trench or drilled holes (where there is concrete). You can find more information on doing a complete treatment for termites in our Termite Control Guide.
Once mixed, Sevin Concentrate should be used within one day of dilution with water.
Sevin Concentrate is not for use on turf, only for use on ornamentals and listed edibles for adult Japanese Beetles. For grub control in lawns and around ornamental plants, Dominion 2L (liquid) and Merit G (granule) are our most popular products. Tempo SC Ultra can be used for the adult beetles on ornamental plants. We have more great information and tips in our White Grub Guide here.
Sevin Concentrate will kill many types of adult beetles, but it will not treat the larvae or grubs. We would recommend using a systemic product earlier in the season before egg hatch for the best results, such as Merit Insecticide Granules. If you currently are seeing grub/larvae damage, then Dylox is the curative treatment that works right away on these pests.
Sevin Concentrate is best applied when rain is not expected within 24 hours after application. If it rained sooner than 24 hours after application the product label states the product can be reapplied no more than once every 7 days and not within 14 days of harvest.
Sevin Concentrate cannot be applied indoor plants. We would not recommend consuming any fruits sprayed and would recommend reaching out to the manufacturer for the best advice at 800-767-8658