What are Urinal Cakes & Urinal Screens and How Do They Work?

Persistent restroom odor in commercial facilities is rarely caused by one missed cleaning step. In high-traffic environments such as hotels, schools, gyms, and office buildings, constant use creates ongoing odor pressure between custodial shifts.

Facility managers need odor-control systems that reduce complaints, protect plumbing, and support standardized maintenance across locations. Understanding urinal cakes allows proactive odor management instead of reactive service calls.

What is a Urinal Cake?

A urinal cake is a deodorizing maintenance block placed inside a urinal to control odor and reduce buildup in the drain system. It dissolves gradually with water exposure, releasing fragrance and mild cleaning agents into the urinal trap.

In commercial settings, urinal cakes serve three operational functions:

• Odor suppression: Release fragrance between cleaning cycles.
• Drain support: Help reduce buildup in traps and pipes.
• Perception management: Signal active maintenance to occupants.

Urinal cakes extend odor control between scheduled cleanings, but don't replace manual sanitation.

Hotels, schools, fitness centers, corporate offices, and event venues commonly use urinal cakes for daily odor management.

What is a Urinal Screen?

A urinal screen is a molded plastic or rubber insert placed over the urinal drain opening. Unlike traditional cakes that sit in the drain, screens cover the entire drain area while allowing liquid to pass through.

Modern urinal screens serve dual functions:

• Debris blocking: Prevent gum, paper, and foreign objects from entering plumbing.
• Odor control: Release continuous fragrance through embedded deodorizing compounds.

Urinal screens sit directly over the drain and activate when water flows through them. As liquid passes through the screen, embedded fragrance compounds release gradually. Most commercial screens last approximately 30 days under normal traffic conditions.

Facilities often prefer urinal screens in high-traffic environments where debris-related clogs are common. Schools, stadiums, gyms, and event venues typically standardize on screens to reduce emergency plumbing calls.

How Do They Work

How do Urinal Cakes Work:

Urinal cakes dissolve gradually when exposed to water, releasing deodorizing agents and mild cleaning compounds. Water activates the block during each flush, suppressing odor-causing bacteria and reducing uric acid buildup in drain traps. They work 24/7 between custodial shifts, but don't replace manual cleaning.

How do Urinal Screens Work:

Urinal screens sit over the drain opening and allow liquid to pass through while blocking solids. As water flows through during each flush, embedded fragrance compounds activate. The physical barrier prevents debris (gum, paper, foreign objects) from entering the plumbing. Screens cover more surface area, reduce splashback, and typically last 30 days under average traffic conditions.

Popular options include:

• Boardwalk Non-Para Cleaner Block Urinal Screens (hybrid screen with embedded cleaner block)
• Impact Eclipse Urinal Screen (multiple scent options)
• AirWorks Urinal Screens (30-day fragrance release)

Urinal Screens vs. Urinal Cakes: Which Is Better for Commercial Restrooms?

Both options control odor. Their operational value differs based on facility needs.

Cost Analysis

In heavy-use facilities such as schools, stadiums, and large fitness centers, screens often reduce emergency plumbing calls. This reduction can lower the total cost of ownership even if the per-unit cost is higher.

Example: One avoided plumbing service call ($150-300) covers the cost difference of screens vs. cakes for an entire year in a 3-urinal facility.

Facilities standardizing across multiple properties benefit from selecting one format and forecasting bulk quantities accordingly.

How Long Do Urinal Cakes Last

Urinal cakes dissolve faster than screens due to continuous water contact.

Urinal Cakes:

• Moderate traffic: Every 2 to 3 weeks
• High traffic: Weekly replacement
• Heavy-use environments: Monitor daily, replace when visibly depleted

Track usage patterns to forecast bulk quantities and avoid reactive replacement. Standardization reduces odor complaints and simplifies procurement.

How Long Do Urinal Screens Last

Replacement frequency depends on traffic.

Urinal Screens:

• Moderate traffic: Every 30 days
• High traffic: Every 2 to 3 weeks
• Heavy-use environments: Inspect weekly, replace as needed

Multi-location operators should assign fixed intervals by facility type and align with deep-clean schedules.

Installation and Maintenance Best Practices

Installation Steps

1. Remove the old cake or screen from the urinal
2. Clean the urinal drain area completely
3. Place the new cake or screen flat over the drain opening (no tools needed)
4. Verify proper positioning for liquid flow

Daily Maintenance

Inspect screens during routine restroom checks, remove visible debris caught in screen mesh, monitor fragrance effectiveness, and check for wear or damage.

Common Mistakes to Avoid

Mistake: Waiting until odor complaints before replacing screens.
Fix: Set calendar-based replacement schedules regardless of visible wear.

Mistake: Using harsh chemicals that damage screen materials.
Fix: Use pH-neutral restroom cleaners compatible with urinal screens.

Mistake: Installing screens incorrectly (upside down or off-center).
Fix: Train custodial staff on proper orientation during replacement.

Mistake: Mixing screen types across locations without documentation.
Fix: Standardize on one SKU per facility type for simplified ordering.

Operational Checklist for Facility Teams

To maintain consistency:

• Select one primary format per facility
• Set documented replacement intervals
• Train custodial staff to inspect daily
• Monitor odor complaints
• Forecast in case quantities to prevent stockouts

Documenting these steps improves labor efficiency and protects brand perception across properties.

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Integrating Urinal Odor Control Into Your Restroom Program

Urinal cakes and screens perform best when combined with structured maintenance programs, including scheduled cleaning procedures, inspection checklists, odor monitoring, and bulk supply purchasing.

Standard procedures, as outlined in How to Clean Your Public Restroom, help maintain consistency across shifts and ensure proper product usage.

Explore commercial urinal maintenance products and restroom cleaning supplies at The Cleaning Station to support consistent performance across your facilities.