Korky · 94-4 (alternate part numbers 94-4A, 94-4PK, 94-6A)
Korky BEEHIVE Mini Sink & Drain Plunger
8.3/ 10
Editorial score
Clearing
7.0
Pipe fit
9.5
Safety
9.0
Ease
8.0
Why this score?
Clog-clearing capability · 7.0
Mechanical plunger for sink clogs; a first step, not for clogs past the trap
Pipe & disposal fit · 9.5
Korky lists sinks with or without garbage disposals; adds nothing to pipes
Handling & safety · 9.0
No chemicals involved; non-marking rubber head
Ease & upkeep · 8.0
Compact, stores under sink; other openings should be covered for best results
Based on documented features and practical tradeoffs, not a hands-on test. Assessment: October 7, 2026. How we score
Best forA first, chemical-free fix for a blocked kitchen sink, with or without a disposal
A compact sink plunger with a beehive-shaped, non-marking rubber head and a T-handle, made in the USA. Korky says it clears clogs in sinks with or without garbage disposals, as well as tubs, shower drains and utility sinks.
Strengths
No chemicals involved; Korky lists sinks with or without garbage disposals
Compact enough to store under the sink
Weaknesses
Korky recommends covering other sink openings or vents for best results, which takes an extra hand or stopper on a double sink
Small 5.5 in. cup is made for sinks and drains, not toilets
Dimensions, material and details
Dimensions
Plunger cup 5.5"; handle length 9"
Material
Non-marking rubber plunger head; T-handle
Use on
Sinks with or without garbage disposals, shower drains, tubs, bathroom and utility sinks
Gel pours through standing water to dissolve tough clogs in about 15 minutes
Pipe & disposal fit · 8.0
Maker lists all septic systems and pipes incl. PVC, copper; disposal directions given
Handling & safety · 6.0
Harmful if swallowed, injures eyes and skin; never mix with ammonia or cleaners
Ease & upkeep · 8.5
Simple pour-and-wait dosing, then flush with hot water
Based on documented features and practical tradeoffs, not a hands-on test. Assessment: October 7, 2026. How we score
Best forFast chemical clearing of a full clog through standing water
A thick gel that Liquid-Plumr says cuts through standing water to dissolve tough clogs, help prevent new ones and remove odors. For garbage disposals the maker says to follow the same directions and flush with the disposal running.
Strengths
Maker lists it as safe for all septic systems and pipes, including PVC, plastic, copper and old pipes
Designed to pour through standing water; wait 15 minutes, or until clear with standing water
Weaknesses
Harmful if swallowed and injures eyes, skin and mucous membranes on contact
Must not be combined with ammonia, toilet bowl cleaners or other brands' clog removers
Zep · ZLDC64 (zep.com sells cases: ZLDC644 case of 4, ZLDC648 case of 8)
Zep Drain Defense - Pipe Build-up Remover - 64 oz
7.8/ 10
Editorial score
Clearing
6.0
Pipe fit
9.0
Safety
8.0
Ease
8.5
Why this score?
Clog-clearing capability · 6.0
Enzyme formula for buildup and slow drains, not a fast fix for full blockage
Pipe & disposal fit · 9.0
Label: safe for all pipes and septic; sinks, disposals and grease traps
Handling & safety · 8.0
Phosphate-free; may cause allergic reaction in sensitive people, needs ventilation
Ease & upkeep · 8.5
1 oz monthly dose; 64 oz bottle gives up to 21 months
Based on documented features and practical tradeoffs, not a hands-on test. Assessment: October 7, 2026. How we score
Best forMonthly enzyme upkeep of kitchen sinks and garbage disposals
A liquid enzyme and bacteria formula that breaks buildup down into water, minerals and CO2. The label says to pour 1 oz into the drain and run warm water, and to use it monthly to prevent backups.
Strengths
Label says safe for all pipes and septic systems; for sinks, garbage disposals, tub/shower drains, RVs and grease traps
Small 1 oz dose; Zep says a 64 oz bottle gives up to 21 months of use
Weaknesses
A maintenance product for buildup and slow drains, not a fast fix for a full blockage
May cause allergic reaction in sensitive individuals; use with adequate ventilation
Digests grease over hours and repeated doses rather than clearing a full clog
Pipe & disposal fit · 8.5
Safe for all pipes and septic; pour with the disposal off
Handling & safety · 8.5
No sodium hydroxide or bleach-style chemistry; phosphate free
Ease & upkeep · 7.0
Anti-glug jug and 30-day guarantee; only 1 gallon size, repeat dosing
Based on documented features and practical tradeoffs, not a hands-on test. Assessment: October 7, 2026. How we score
Best forKitchens where fats, oils and grease keep slowing the drain
An enzyme-enhanced formula with a bacteria and enzyme blend that Green Gobbler says digests fats, oils, grease and food waste in drain lines, grease traps and septic tanks. It contains no sodium hydroxide, and the maker says it can go down a sink with a garbage disposal (disposal off).
Strengths
Maker says it is safe for all types of pipes and septic; no sodium hydroxide or bleach-style chemistry
Large 1 gallon jug with anti-glug design; 30-day money-back guarantee
Weaknesses
Works over hours and repeated doses rather than clearing a full clog at once
Only one size (1 gallon), which is a lot for a single home sink
Dimensions, material and details
Dimensions
1 gal (128 fl oz) bottle
Material
Enzyme enhanced formula: bacteria and enzyme blend with surfactants; no sodium hydroxide; phosphate free
Safe for
Pipes, drains and septic (label); 'safe for all types of pipes' (FAQ)
Dose (drains)
Website: 2 to 4 oz weekly for regular clogs, 2 to 4 oz daily for problem drains
25 ft MAXCORE cable with bulb auger reaches past the trap; hand or drill driven
Pipe & disposal fit · 8.5
Chemical-free; fits 3/4 to 2 inch pipes; not recommended for toilets
Handling & safety · 6.5
Needs safety glasses and leather gloves; no corded drill
Ease & upkeep · 6.5
More set-up than a plunger; 4.4 lbs; Full Lifetime Warranty
Based on documented features and practical tradeoffs, not a hands-on test. Assessment: October 7, 2026. How we score
Best forStubborn clogs past the trap that plunging and liquids don't clear
A hand drain cleaner with a 1/4 in. x 25 ft MAXCORE cable and a bulb auger, for sinks, tubs and showers. AUTOFEED feeds and retracts the cable with a trigger, and it can be run by hand or with a drill at up to 500 RPM.
Strengths
Manual or drill-powered operation (up to 500 RPM) for tougher blockages
RIDGID lists a Full Lifetime Warranty
Weaknesses
Manual says it is not recommended for toilets and must not be used with a corded drill
Requires safety glasses and leather work gloves; more set-up than a plunger or a pour-in cleaner
Dimensions, material and details
Dimensions
Cable 1/4" x 25' (6 mm x 7.6 m); tool 12.5" x 7.5" x 9.25"
Construction
1/4" MAXCORE cable with bulb auger, retained in drum; AUTOFEED trigger
Stubborn clogs past the trap that plunging and liquids don't clear
Cable 1/4" x 25' (6 mm x 7.6 m); tool 12.5" x 7.5" x 9.25"
OUR METHOD
How we scored
Manufacturer specs, not hands-on tests. Each pick is rated out of 10 on four things:
30%Clog-clearing capability
25%Pipe & disposal fit
25%Handling & safety
20%Ease & upkeep
What to look for in a drain cleaner
Start mechanical, then chemicalplunger first, then gel or hand auger for stubborn clogs
Never mix drain productsmixing can release hazardous gases, so flush one out first
Check pipes, septic and disposalread the label for your pipe type, septic and disposal
Frequently asked questions
What is the best way to unclog a kitchen sink?
Start with a plunger: the Korky BEEHIVE Mini Sink & Drain Plunger is the best overall pick, adds nothing to your pipes and works on sinks with or without a garbage disposal. If that fails, use a gel like Liquid-Plumr Clog Destroyer for a full clog, or the RIDGID POWER SPIN+ hand auger for a stubborn clog past the trap. Never mix drain products, and flush one out completely before trying another method.
What is the best drain cleaner for kitchen sink grease?
Green Gobbler Enzyme Drain & Grease Trap Cleaner is the pick for grease buildup: its bacteria and enzyme blend digests fats, oils, grease and food waste and contains no sodium hydroxide. It works over hours and repeated doses rather than clearing a full clog at once. For monthly upkeep, Zep Drain Defense is the maintenance option.
Which drain cleaners here are safe for PVC pipes and septic systems?
Liquid-Plumr says Pro-Strength Clog Destroyer is safe for all septic systems and pipes, including PVC, plastic, copper and old pipes. Zep's Drain Defense label says it is safe for all pipes and septic systems, and Green Gobbler says its enzyme cleaner is safe for all types of pipes and septic. The Korky plunger and RIDGID POWER SPIN+ use no chemicals at all.
Should I use an enzyme cleaner or a gel for a fully blocked kitchen sink?
For a full blockage, the Liquid-Plumr gel is made to pour through standing water and work in about 15 minutes, or a plunger can push the clog through. Enzyme products such as Zep Drain Defense and Green Gobbler are aimed at buildup, slow drains and grease and are used as repeat or monthly treatments. If plunging and a gel fail, a hand auger like the RIDGID POWER SPIN+ reaches further into the line.
