Riding in Iceland

[SuffolkGirl]

I am heading to Iceland in August for a riding vacation. I need to have either all new equipment or any equipment (boots, clothes, etc.) that has been in contact with another horse disinfected and provide a certificate proving same.

Has anyone done this? How expensive is the disinfecting process and does it deteriorate the material?

Any information would be greatly appreciated. I'd rather not go out an buy new gear...

thanks