Restrict Air Shipping on cetain categories?

I have two catergories in my store that Air shipping has to be disabled. I did put a note in the product description but:

is there a way to disable air shipping in those two categories? I just want UPS ground enabled on those.....

Thank you.

You would need to have a test on the shopping cart to see if any of the products are in those two categories ... if so, then disable the shipping selection ...

This could be done but does take a bit of customization to do this ...

Do you use Linked Products?

What is the Shipping Module that you are using?

I do not have linked products on those two categories.

i am using UPS shipping. I need to disable Nextday, Second Day, 3day and leave all other ground shipping.

You could make a function or test that would count how many of each category is in the cart and if any are in there then disable the shipping methods ...

This could be done by counting the master_categories_id for these categories as you are not using Linked products ...

Then, if even 1 is in the cart, an IF statement can be added around the shipping methods to block their display ...