Q.Harmful Information On Your Site
https://www.gardeningknowhow.com/plant-problems/pests/insects/tent-worms-control.htm#:~:text=Whilesmallinfestationscanbe,remainingsafetootherwildlife. Refers to Bt as a contact insecticide, which is not true. Bt is used to control foliage eating insects an requires ingestion in order to work. That’s why it’s safer than a contact insecticide, which are more toxic.

Certified GKH Gardening Expert
Although I can see where there may be some confusion, it is not suggesting that Bt is a contact killer. This is a separate sentiment. The contact pesticides were referring to sprays, like soapy water. I will talk to the editors to see if there can be a clarification.