Harriet from Richmond writes
Carpenter Bee are attaching wood pergola,18 by 20 that sits over a fish pond, 6by 9 feet.
Due to the sensitive nature of this species of fish, we do not give advice on Koi ponds. We recommend contacting a local Koi expert for recommendations or consulting with the County Cooperative Extension Office for recommendations. As all insecticides are very detrimental to all types of fish, including koi fish. You should not use any insecticides around them. When people ask about products that would be safe to use around boat docks we would typically recommend either EcoVia or Essentria IC3 as these are natural products that are made from essential oils instead of pesticides. However, when Koi fish are in a pond we recommend contacting a Koi expert.
Answer last updated on: 05/28/2023
