castor oil for pest control
You show a CVS/Walgreens type of castor oil but I have been told that for garden and lawn use that castor oil must be scented. Are these oils scented? Is the info about scented oil correct? Where can I get this oil?
Certified GKH Gardening Expert
The scent will not be the primary reason for using the oil. Although it may help, the oil is more for smothering insects, rather than keeping them away. The oil will be toxic to their system so they will not be able to consume the plant.
It is not necessary to use scented oils, but they can help deter pests just a little better. We do not recommend places to purchase products, but a google search and clicking on the shopping tab will usually take you to results that you can use.