OldMedUser
Well-Known Member
As BTi is a bacteria I don't think they can become resistant to it and it takes many generations for a bug to develop resistance to chemical pesticides in any case. It's been used for decades to control mosquitoes and still works great.That's great!
In case you haven't thought about it don't forget to read up on resistance to insecticides if they aren't eradicated.
Leaf chomping bugs like mites and thrips can never develop resistance to stuff like soap/oil sprays as it kills them by dehydration and suffocation and will work forever.