Request a free sample of Prevail's Per-Fit Underwear from Dusini Drug Store! The Dusini At Your Door service is all about convenience, discretion, and value. With Dusini At Your Door you sign up to receive the amount of Prevail Per-Fit Underwear you need each month and we'll conveniently deliver them right to your door, all at a discounted price! No more racing to the store when you run out of underwear or standing in long lines with your incontinence products in hand.