Suspend SC is applied to interior cracks and crevices quarterly as directed where the floor meets the wall to painted/varnished baseboards. Avoid overspray to surfaces that can be damaged by water alone. You can apply to listed areas and entry points on the structure (full list of areas/surfaces on the product label) where the listed pests will travel ie around windows, doors, siding, soffits, eaves, turf, etc. Prior to application, please find the product label here for full mixing and application instructions.
If you are applying an insecticide such as Suspend SC to the point of dripping or runoff, then you are likely using too much product. This could cause you to go over the labeled rates for legal and safe application. If you are treating on ornamental plants, then you want to get thorough coverage without runoff; runoff would mean that the product is falling off the leaf surface rather than staying on it and drying there to protect from your target insects.
You can treat those areas with a residual insecticide like Bifen XTS. This product works great for wasps and you would need to treat them again about every 21 days to keep control of the wasps. It is also labeled for flying insects and you can spray those areas but will also need to treat any dense bushy areas in your property to keep the flying insects under control. It can not be applied to edibles so avoid those if you have any. If you need to treat any nest you can use Wasp Freeze Aerosol or Delta dust. You need to be very careful and use protective equipment if possible to avoid getting stung. It is best to treat it early in the morning or late in the evening. Please take a moment to read over our Wasp guides.
https://www.domyown.com/how-to-get-rid-of-wasps-a-505.html
The Suspend SC can be used 0.25 - 1.50 oz. per gallon of water. 1 Gallon of finished solution will generally cover 1,000 square feet when using a hand pump sprayer for spot or perimeter treatments. The pint of the Suspend SC can treat approximately 16,000 squeare feet.