- Send an email to rebate@rainguard.com. In the subject write sample request
- Include your name, mailing address, email and phone number
- Let them know you want a free sample of Rain Guard. By default you should get the Advanced Waterproofer. Or if you wish you can pick any of their products to sample. Click here to see a list of all their products
Source of this offer: They originally had this offer posted on the Facebook page here, but they were having problems with the form. They then made a post here asking people to email them instead since the form isn't working correctly
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