Give Each Basin a Job: Make Your Double Kitchen Sink Work Smarter

By Kevin Cody | Founder & CEO, FLI Products / Mary Joan Isorena, Communications
Published: September 30, 2026

Not sure how to use a double kitchen sink efficiently? Giving each basin a job can make washing, rinsing, soaking and draining easier to manage. A 2-in-1 sink strainer and stopper adds even more flexibility by letting each drain change jobs when your kitchen routine changes.

A double-basin sink gives you something a single-basin sink cannot: two separate work areas operating at the same time. The key is not treating both sides exactly the same. Instead, think about what each basin needs to do during the task in front of you—and how easily those jobs may need to switch.

Visit the Flex Strainer hub for more kitchen sink care, drain protection, and product guidance.

Key Takeaways

• A double kitchen sink lets you separate tasks instead of asking one basin to handle everything at once.

• One basin can hold water for washing or soaking while the other remains available for rinsing and draining.

• The roles do not have to be permanent. You can switch the purpose of each basin as your kitchen task changes.

• A sink strainer allows water to drain while catching solid food debris; a stopper closes the drain when you need the basin to hold water.

• Flex Strainer® 2-in-1 Sink Strainer & Stopper combines those two functions in one product.

• Flex Strainer fits most standard 3.5-inch kitchen sink drains and garbage disposals and measures 5.25 inches across.

• The 2-pack is particularly practical for double-sink setups.

• Larger food scraps should still be disposed of before washing, and fats, oils and grease should not intentionally be poured down the drain.

What Is the Best Way to Use a Double Kitchen Sink?

There is no single rule saying the left basin must always be for washing and the right basin must always be for rinsing.

A more useful approach is to think in terms of functions.

During one kitchen task, you might need:

BASIN 1: HOLD WATER → WASH OR SOAK

while keeping:

BASIN 2: RINSE → CATCH DEBRIS → DRAIN

That arrangement keeps one side available for running water while the other holds standing water.

When the task changes, the basins can change with it.

That flexibility is one of the practical advantages of having a double-basin kitchen sink.

Give Each Sink Basin a Job Before You Start

A common problem with a double sink is that both sides gradually become holding areas for dirty dishes.

Once that happens, you technically have two basins—but neither one is particularly useful.

Before beginning a larger kitchen task, decide what each side needs to accomplish.

For example:

Basin 1: Washing or Soaking

This basin can be used when you need standing water for hand-washing or soaking appropriate dishes and cookware.

For this job, the drain needs to be stopped.

Basin 2: Rinsing and Draining

Keep the second basin available for rinsing items and allowing water to flow normally.

For this job, the drain needs to remain open, while a strainer can help catch residual solid food debris that reaches the drain.

The basic workflow becomes:

WASH OR SOAK → RINSE → DRAIN

Instead of moving everything through one crowded basin, the two sides work together.

Why the Two Drains May Need Different Functions

The interesting part of a double-basin sink is not simply that there are two bowls.

There are also two drains.

And during many kitchen tasks, those drains may need to do opposite things.

One needs to prevent water from leaving the basin.

The other needs to allow water to leave freely while keeping unwanted solid debris from entering the drain.

That is the difference between a sink stopper and a sink strainer.

A stopper closes the drain so the basin can hold water.

A strainer remains open to water flow while catching food scraps and other solid debris.

With a double sink, you may need both functions at the same time.

Where Flex Strainer® Fits Into a Double-Sink Setup

Flex Strainer® is a partner brand, sold by FLI Products.

The Flex Strainer® 2-in-1 Sink Strainer & Stopper combines straining and stopping functions in one flexible sink accessory.

According to the current product specifications, Flex Strainer:

• Functions as both a sink strainer and stopper

• Fits most standard 3.5-inch kitchen sink drains and garbage disposals

• Measures 5.25 inches wide

• Is BPA-free

• Is dishwasher safe

• Is Made in USA

• Is available in Black and Gray

• Is available in 1-pack and 2-pack configurations, as well as a 3-piece set

The 2-pack is especially relevant to a double-sink setup because each basin can have a Flex Strainer available at its drain.

Shop the Flex Strainer® 2-in-1 Sink Strainer & Stopper

One Basin Can Stop While the Other Strains

This is where a 2-in-1 design becomes particularly useful in a double kitchen sink.

Imagine that you are hand-washing items on one side while keeping the second basin available for rinsing.

In the washing basin, you need the drain stopped so the water stays in the sink.

In the rinsing basin, you need exactly the opposite: water should drain, while residual solid debris can be caught before it enters the drain.

So your setup becomes:

BASIN 1 → STOP → HOLD WATER → WASH

BASIN 2 → STRAIN → RINSE → DRAIN

Once you're finished washing, you can release the water and return that side to normal draining.

The important distinction is that the jobs belong to the task, not permanently to one side of the sink.

Your Double-Sink Setup Can Change Throughout the Day

Suppose you begin with one basin holding water and the second available for rinsing.

Later, you no longer need standing water.

Now both basins may need to drain normally.

Or perhaps you need to hold water on the opposite side because that basin better accommodates the item you're working with.

A double sink becomes more useful when you can change its configuration instead of treating one basin as permanently designated for one purpose.

With a Flex Strainer in each compatible drain, either side can provide the straining or stopping function as needed.

That creates a flexible sequence:

STOP + STRAIN → FINISH TASK → DRAIN → STRAIN + STRAIN

And when standing water is needed again:

CHOOSE BASIN → STOP → USE → RELEASE → RETURN TO STRAINING

Don't Let Both Basins Become Dirty-Dish Storage

One simple way to lose the benefit of a double sink is to fill both sides with dishes.

If possible, keep at least one basin available for the active part of your kitchen routine.

That could mean scraping plates and organizing items before they reach the sink rather than immediately dropping everything into whichever basin has space.

Keeping one side functional gives you somewhere to rinse, drain or work while the other basin handles washing or soaking.

The goal is not to create a complicated system.

It is simply to preserve the reason you have two separate basins in the first place.

Scrape Larger Food Scraps Before Washing

A sink strainer is useful as a final catch point for residual solid debris, but it should not replace proper food-waste disposal.

Before washing dishes or cookware, remove larger scraps and dispose of them appropriately.

Fats, oils and grease also require particular attention. They should not intentionally be poured into the kitchen drain, because they can contribute to buildup and wastewater-system problems.

A practical routine is:

SCRAPE → WASH → CATCH RESIDUAL DEBRIS → EMPTY STRAINER → RINSE

The Flex Strainer catches the smaller solid debris that still reaches the sink during normal use; it is not a reason to intentionally wash larger amounts of food down the drain.

What If One Side Has a Garbage Disposal?

Some double-basin sinks have a garbage disposal connected to one basin while the other uses a conventional kitchen drain.

That configuration can affect how you organize the two sides.

Flex Strainer is designed to fit most standard 3.5-inch kitchen sink drains and garbage disposals, so it can be an option for compatible disposal-side drains as well as standard kitchen drains.

However, having a garbage disposal does not mean every type or quantity of food waste should intentionally be sent through it.

Your disposal manufacturer's operating and maintenance instructions should take priority for the specific unit installed in your kitchen.

Should the Larger Basin Be for Washing or Rinsing?

If the two sides of your sink are different sizes, consider the physical task rather than following a fixed rule.

A larger basin may be more convenient for washing or soaking larger cookware because it provides more working room.

A smaller basin may work well for rinsing smaller items.

But the arrangement can be reversed when the task calls for it.

That's another reason to think of a double sink as a flexible workstation, rather than assigning permanent labels to the left and right sides.

What About a 50/50 Double Sink?

A 50/50 double sink gives you two similarly sized basins.

In that configuration, there may be even less reason to permanently designate one side for washing and the other for rinsing.

Instead, either basin can take on either role.

If both drains are compatible with the same drain accessory, having a 2-in-1 strainer and stopper available in each basin makes it easier to change the setup according to what you're doing.

That is one reason FLI offers Flex Strainer in a 2-pack and identifies double-sink setups as an intended use.

Keep the Strainer Clean Between Tasks

Once a strainer has caught food debris, empty it rather than allowing the debris to remain around the drain.

For Flex Strainer specifically, the current product information identifies the product as dishwasher safe. It can also be removed so captured debris can be emptied before the product is returned to the sink.

This is particularly useful in a two-basin workflow because the sink may change functions several times during meal preparation and cleanup.

A clean strainer is ready for the next round.

When a 2-Pack Makes Sense for a Double Kitchen Sink

If both basins have compatible drains, using one Flex Strainer in each basin means you do not have to move a single accessory back and forth as the roles of the sinks change.

One side can be stopping while the other is straining.

Later, both can return to straining.

For kitchens where the two basins regularly perform different jobs, that is the practical advantage of the 2-pack—not simply having a spare.

Before purchasing, check the drain configuration in both basins rather than assuming they are identical.

Flex Strainer is specified to fit most standard 3.5-inch kitchen sink drains and garbage disposals and has an overall width of 5.25 inches.

See Flex Strainer® 1-Pack and 2-Pack Options

A Simple Double Kitchen Sink Routine

You don't need an elaborate system to make better use of two basins.

Start with the task.

1. Scrape

Remove larger food scraps before dishes enter the sink.

2. Choose Your Washing Basin

If you need standing water, select the basin that best accommodates what you're washing and use the stopper function.

3. Keep the Other Basin Available

Use the second basin for rinsing and normal drainage.

4. Catch Residual Debris

Use the straining function to catch small solid debris that reaches the drain during rinsing.

5. Empty the Strainer

Dispose of captured food debris appropriately instead of washing it back into the drain.

6. Reset the Sink

When you no longer need standing water, release it and return that basin to normal straining and drainage.

The full workflow is:

SCRAPE → STOP ONE SIDE → WASH → STRAIN THE OTHER → RINSE → EMPTY → DRAIN → RESET

The advantage of a double sink is not merely having twice as many basins.

It's being able to give those basins different jobs at the same time.

Frequently Asked Questions About Double Kitchen Sinks

What should each side of a double kitchen sink be used for?

There is no universal left-side/right-side rule. A practical approach is to assign each basin according to the current task. For example, one basin can hold water for washing while the second remains available for rinsing and draining.

Which side of a double sink should I wash dishes in?

Use whichever basin provides enough space for the items you're washing. If your sink has unequal basin sizes, the larger side may be more convenient for larger cookware. The other basin can remain available for rinsing and draining.

Should one side of a double sink always be used for rinsing?

No. The roles can change. One of the main advantages of having two basins is being able to configure them differently depending on what you're doing.

Can I use a sink strainer in both sides of a double sink?

Yes, provided the strainers are appropriate for the drain sizes and configurations in both basins. Check each drain rather than assuming both are identical.

Can I stop one side of a double sink while using the other?

In a typical two-basin workflow, one basin can be used to hold water while the other remains available for rinsing and drainage. The exact plumbing configuration of the sink should still be considered if you encounter drainage problems.

Can Flex Strainer® be used in a double kitchen sink?

Yes. FLI specifically identifies double-sink setups as an application for the Flex Strainer 2-pack. Flex Strainer is designed for most standard 3.5-inch kitchen sink drains and garbage disposals.

What does the Flex Strainer® 2-in-1 do?

It combines two drain functions in one product. It can function as a strainer to catch solid food debris while water drains and as a stopper when you need the sink to hold water.

What size is Flex Strainer®?

The Flex Strainer 2-in-1 measures 5.25 inches wide and is designed to fit most standard 3.5-inch kitchen sink drains and garbage disposals.

Is Flex Strainer® dishwasher safe?

Yes. The current FLI product specifications identify Flex Strainer as dishwasher safe.

Make Both Sides of Your Double Sink Work for You

A double kitchen sink is most useful when the two basins are allowed to do different jobs.

Instead of letting both sides become crowded with dishes, think of them as two parts of the same workstation: one can hold water while the other remains available for rinsing and drainage, and those roles can change as the task changes.

The Flex Strainer® 2-in-1 Sink Strainer & Stopper supports that flexibility by combining straining and stopping in a single product. For compatible double sinks, the 2-pack allows each basin to have its own Flex Strainer ready for either function.

Flex Strainer® is a partner brand, sold by FLI Products.

Shop Flex Strainer® 2-in-1 Sink Strainer & Stopper

About Kevin Cody

Kevin Cody | Founder & CEO, FLI Products

Kevin Cody is the Founder and CEO of FLI Products and a product development, merchandising and retail industry veteran with more than 20 years of experience. His background includes merchandising leadership at The Home Depot as well as developing, sourcing, manufacturing, marketing and bringing consumer products to market through major retailers and online marketplaces.

Kevin works directly with manufacturers, inventors, retailers and consumers to develop practical products that solve everyday problems. His experience spans product design and development, retail merchandising, manufacturing, e-commerce, marketplace strategy and consumer product education.

Through the FLI Products Learning Center, Kevin shares practical, experience-based information designed to help consumers better understand products, solve problems and make informed purchasing decisions.

Read Full Bio

About FLI Products

FLI Products develops and markets practical consumer products designed to solve everyday problems at home, outdoors and on the job. Working directly with manufacturers, inventors and retailers, FLI Products focuses on thoughtful product design, practical functionality and useful solutions for consumers. Its products are available through FLIProducts.com and select major retailers and online marketplaces.

About FLI Products

Sources & Resources

FLI Products — Flex Strainer® 2-in-1 Sink Strainer & Stopper

Visit the Flex Strainer hub for more kitchen sink care, drain protection, and product guidance.