Inclusion Criteria:

• Is a man or woman aged ≥ 18 and ≤ 80 years.
• Has diabetes mellitus according to the American Diabetes Association criteria.
• Has a single skin ulcer below the knee, defined as "uninfected" by the Infectious Disease Society of America Guidelines (Wound lacking purulence or any manifestations of inflammation).
• Has had an x-ray of the affected area within the 2 days immediately preceding or at Visit 1 (Baseline/Randomization) that is negative for osteomyelitis.
• Has an ankle-brachial index (ABI) ≥ 0.7 and ≤ 1.3. (Note: Patients with ABI < 0.7 or > 1.3 may be included if they have either a transcutaneous oxygen pressure or a toe pressure ≥ 40 mm Hg on the limb with the target ulcer.)
• Meets certain minimal laboratory criteria.
• If female, is nonpregnant (negative pregnancy tests at the Baseline/Randomization Visit) and nonlactating.
• If female, is either not of childbearing potential (defined as postmenopausal for at least 1 year or surgically sterile [bilateral tubal ligation, bilateral oophorectomy, or hysterectomy]) or practicing 1 of the following medically-acceptable methods of birth control and agrees to continue with the regimen throughout the study:

Oral, implantable or injectable contraceptives for 3 consecutive months before the Baseline/Randomization Visit.

Total abstinence from sexual intercourse (minimum of 1 complete menstrual cycle before the Baseline/Randomization Visit).

Intrauterine device (IUD). Double barrier method (condoms, sponge, diaphragm or vaginal ring with spermicidal jellies or cream).

• Willing to return to the study facility for the Posttreatment Evaluation Visit.
• Must be able to fluently speak and understand English and be able to provide meaningful written informed consent for the study.

Exclusion Criteria:

• Has a known history of hypersensitivity to gentamicin (or other systemic aminoglycosides) or any of the test article or reference product components.
• Has a known hypersensitivity to bovine collagen.
• Has any uncontrolled illnesses that, in the opinion of the Investigator, would interfere with interpreting the results of the study.
• Has a target ulcer with a wound size > 5 × 5 cm.
• Has gangrene or infection of the affected limb.
• Has a wound associated with prosthetic material or device.
• Received any topical or systemic antimicrobial therapy within the 2 weeks prior to study entry (Visit 1 [Day 1]).
• Has documented osteomyelitis.
• If severely immunocompromised, may be excluded at the discretion of the Investigator.
• Has a history of alcohol or substance abuse in the past 12 months.
• Is undergoing dialysis (renal or peritoneal) or has history of kidney transplant.
• Has history of myasthenia gravis or other neurological condition where gentamicin use is contraindicated as determined by the Investigator.