Do you mean as in a 70 foot tree? What caterpillars do you have?

tj

trees range from 30-60 feet, I'd be happy spraying any portion to minimize the damage from the spruce budworm. I have a pressure washer, wondering if that could be used somehow?

Not sure of the rage on a hose end sprayer,likely around 30 feet. Have you looked into those to at least cover the smaller trees? I fear a jet strong enough to send the water 60 feet up might pulverize the bacteria in Bt. Might be a question to ask the Bt manufacturers. Also, your local forestry department may have suggestions.

tj

Weight might be an issue, but it's probably only a matter of time before some enterprising tree care company adapts drones for spraying tall trees and other vegetation in awkward places.

Maybe instead of using reservoir on the drone, just a hose from tank on ground is on drone.

great idea!

Is a trombone sprayer the cheapest way to get spray the highest?

is there such thing as a power trombone sprayer?

dont forget the full hazmat suit with respirator ...

and talking to your insurance agent first ...

ken

fmaas, listen to Ken. Man, that is going to be alot of not totally the worst pesticide.

Here is the label from a site very friendly to home pest control.

https://www.doyourownpestcontrol.com/SPEC/LABELS/thuricide.pdf

Seems if a victim inhales it you have to:

-move them to fresh air

-call poison control

If you get it on your clothes:

-take them off

-shower for 15-20 minutes

-call poison control

You're going to have to educate your neighbors also. Show them where the label says it can be used on "pressurized sprayers" and hope for the best. I'd worry there are differences in how you can use it in agricultural and suburban zoned areas.

I think you should be careful. Your neighbors might not take kindly to poison being pressure sprayed while their kids and pets are outside. Your IP is no doubt logged by your service provider and Gardenweb also so it won't look good if you don't take every precaution.

Maybe you live alongside a mountain all alone and the above is wasted typing. In that case just get the space suit to put on when spraying.

I'm not looking to spray malathion or agent orange.

Bt biological insecticide is safe for organic, and only affects caterpillars, is that not correct?

Do you have a picture of the damage?