Yes, Sevin Concentrate can be used on ornamentals such as Crepe myrtle trees as long as under 10 feet per the product label
Unfortunately, per the manufacturer the Sevin Concentrate can't be used for this purpose. It is not labeled to be used for any pasture or free range animal use, only for residential use.
Sevin Concentrate is pet safe if used as directed. Pets must be kept out of the area while the product is being applied but can safely return once everything is dry.
Per the product label for Sevin Concentrate: Reapply if insects return, but not more than once every seven days and according to pre-harvest interval.
Sevin Concentrate can be applied to grapes once they fruit, but should the pre harvest interval would be 7 days before harvesting that would could apply up to per the product label.
We are sorry that your pet is sick. We recommend contacting your vet for medical advice for your dog. If you have concerns about exposure to Sevin Concentrate specifically, please call the Medical Emergency number on the product SDS: 1-800-420-9347.