Robert from Somerset writes
Suspend SC is not a contact kill. It does take some time to affect insects after they contact a treated surface. It also isn't a repellent, so it won't keep them away or keep them from coming back.
PT Wasp Freeze II Aerosol is a contact kill product for wasps and hornets, but it also isn't a repellent. There isn't a repellent that would keep the wasps and hornets from coming back.
Answer last updated on: 07/28/2026