Two choices

YS300 Intelligent Dogtra Anti Bark Collars: "Sound recognition and filtering microprocessor" that distinguishes your dog's barking from ambient noises. Self-activating micro-processing sound analysis technology, which only responds to the barking of your dog. (Patents pending.) Features 7 intensity levels for a wide variety of dispositions. Level "P" only emits a vibration, whereas levels 2-7 emit a vibration followed by stimulation. With proper repeated usage, when level "P" is used, your dog can learn to stop barking with the vibration warning so that stimulation will no longer be necessary. The fully waterproof receiver features two-hour quick charge Lithium-Polymer batteries, antimicrobial plastic casing, LED battery life indicator, and surgical stainless steel contact points to minimize irritation to the dog's skin. Testing level (T) that allows for testing of the collar without any electrical correction. Fits dogs as small as 10 lbs. (receiver weight: 4.0 ounces) Fits neck size up to approx 27".

YS500 Brute Barker:A lightweight, waterproof collar to control nuisance barking in large dogs and really stubborn barkers. Rechargeable NiMH battery and more secure fit against the neck for more consistent correction. All 7 levels of correction are easily selected from a dial on the collar. The Yapper Stopper 500 is self contained with no parts to lose or misplace.

Both Dogtra Bark Collar Features:
• Easy to use - One dial does it all. On/Off switch and 7-intensity-selection dial on the collar.
• Rechargable batteries
• Waterproof
• Kit includes small collar box with collar, battery and battery recharger, instructions
• One year warranty

This bark collar has only two skin sensors and weighs only 3 oz, but it does the work of the big boys!

When annoying barking begins, the bark collar's sensitivity setting senses the vibration of the dog's vocal cords and administers a brief 1/2 second harmless but unpleasant correction. If barking continues for another 3 seconds, another correction is given and repeated at 3 second time-out intervals until the barking stops.

The dog learns very quickly that the barking initiates the correction, stops barking, and the training is complete.

Economy Innotek BC-50B Anti Bark Collars Feature:
• Small, 2.5 ounce collar box unit
• Correction levels to suit every dog's temperament - very low stimulation for very sensitive dogs to much higher levels of correction (still harmless but more unpleasant) for the stubborn barker.
• The collar can only be activated by the barking of the dog wearing the collar, not by other dogs' barking or loud noises nearby.
• Bark collar can be used indoors or out, while you're home or away.
• Free training DVD included
• Recommended for barking dogs 5 to 100 lbs.
• Limited Lifetime Warranty

Two models to choose from
Economy Model BC50B is water resistant, uses 6 volt replaceable battery (included) and comes with a receiver, nylon buckle collar, battery, DVD and instructions INNBC50B (purchase below)	Deluxe ModelBC200 Bark Collar Unit is waterproof, has a maintenance-free rechargeable NiCad battery (recharger included) , and comes with a receiver, nylon buckle collar, recharger unit, DVD, and instructions INNBC200

Petsafe/Innotek spray collars are small and economical. Regular collar has small receiver box and Little Dog Collar has an even tinier receiver box for smaller dogs.

Larger Collar uses a replaceable 6v alkaline battery and Little Dog Collar has a replaceable RFA188 battery module. Both have low-battery indicators.

Spray container emits up to 40 sprays per container, and the collars also have a low-spray indicator so you don't count on a collar with no correction left in it.

Spray Anti Bark Collars Features at a Glance:
• No false corrections. The collar can only be activated by the barking of the dog wearing the collar, not by other dogs' barking or loud noises nearby.
• Bark collar can be used indoors or out, while you're home or away.
• Comes on a 28" black nylon collar.
• Completely waterproof
• Includes battery and 1st can of Lemon-scented Spray
• Operating Guide included
• Regular Collar recommended for dogs over 55 Lb. Little Dog Collar recommended for barking dogs 5 to 55 lbs.
• 10 Year Warranty

Additional features of Little dog Spray Bark collar at a Glance:
• Much smaller control box with no probes on the back side. Vibration sensors are contained in the back collar plate.

20% smaller than other brands! 18 progressive levels of correction. Three selectable ranges. Within each range, there are six automatically incrementing correction levels.

When the dog barks, the collar administers a low correction followed by ever-higher corrections until the barking ceases. No dog receives a correction higher than he needs to discourage the bad behavior. Your pet soon learns to avoid the correction altogether by not barking.

Petsafe Premium Deluxe Anti Bark Collars Feature:
• Waterproof Resistant transmitter on adjustable collar (adjusts 6"-28")
• 18 progressive correction levels
• Automatic shut-off if dog continues to bark beyond 15 times in a 50 second period
  • Time out period lasts 3 minutes and continues to emit warning beeps without the correction
  • After the 3 minute period, the unit returns to stand-by mode and waits for the dog to bark again
• Stop-shock caps included for initial "dummy" training so that the dog can get used to the weight and sound of the collar without the correction
• Long-lasting 6 volt battery module (included PSPRFA67D) can be replaced easily and without tools.
• LED for low battery warning flash (will flash once every 2-3 seconds when low battery voltage is detected)
• Patented Perfect Bark uses both sound and vibration to accurately detect a bark every time and prevent mis-corrections.
• Comes with collar, receiver, battery, stop caps, owner's manual, training video and training manual.
• Lifetime Warranty
• For dogs 8 lbs and up

Patented Perfect Bark™ Technology simultaneously senses both sound and volcal cord vibration, and only the combination of both will trigger the correction. Guarantees that only your dog triggers the correction, not a nearby dog or sound.

When the dog barks, the collar automatically adjusts the correction to your dog's temperament. No dog receives a correction higher than he needs to discourage the bad behavior. No dog receives a correction intended for another dog. Your pet soon learns to avoid the correction altogether by not barking.

QuickFit buckle provides a quick release and a perfect fit every time. Just adjust the sizing one time. Collar snaps on and off without adjusting sizing again.

This bark collar has only two skin sensors and weighs only 3 oz, but it does the work of the big boys!

When annoying barking begins, the bark collar's sensitivity setting senses the vibration of the dog's vocal cords and administers a brief 1/2 second harmless but unpleasant correction. If barking continues for another 3 seconds, another correction is given and repeated at 3 second time-out intervals until the barking stops.

The dog learns very quickly that the barking initiates the correction, stops barking, and the training is complete.

BC-200 Deluxe Innotek Anti Bark Collars Feature:
• Small, 2.5 ounce collar box unit
• Correction levels to suit every dog's temperament - very low stimulation for very sensitive dogs to much higher levels of correction (still harmless but more unpleasant) for the stubborn barker.
• The collar can only be activated by the barking of the dog wearing the collar, not by other dogs' barking or loud noises nearby.
• Bark collar can be used indoors or out, while you're home or away.
• Free training DVD included
• Recommended for barking dogs 5 to 100 lbs.
• Limited Lifetime Warranty

Two models to choose from
Economy Model BC-50B is water resistant, uses 6 volt replaceable battery (included) and comes with a receiver, nylon buckle collar, battery, DVD and instructions INNBC50B	Deluxe ModelBC-200 Bark Collar Unit is waterproof, has a maintenance-free rechargeable NiCad battery (recharger included) , and comes with a receiver, nylon buckle collar, recharger unit, DVD, and instructions INNBC200 (purchase below)

No more barking dogs. 6 progressive levels of correction. When the dog barks, the collar administers a low correction followed by ever-higher corrections until the barking ceases. No dog receives a correction higher than he needs to discourage the bad behavior. Your pet soon learns to avoid the correction altogether by not barking.

Petsafe Anti Bark Collars Feature:
• Waterproof Receiver on adjustable collar (adjusts 6"-28")
• 6 progressive correction levels.
• New rubber overmold greatly reduces accidental activation
• Automatic shut-off if dog continues to bark beyond 15 times in a 30 second period
  • Time out period lasts 5 minutes and continues to emit warning beeps without the correction
  • After the 5 minute period, the unit returns to stand-by mode and waits for the dog to bark again
• Stop-shock caps included for initial "dummy" training so that the dog can get used to the weight and sound of the collar without the correction
• Long-lasting Silver Oxide Replaceable Battery (included). Low battery indicator light.
• Comes with collar, receiver, battery, stop caps, owner's manual, and training manual. (BC302 also includes educational video about barking and its solutions)
• Lifetime Warranty
• For dogs 8 lbs and up

The biggest barkers are usually the smallest dogs. The new PetSafe UltraLight Sonic Bark Collar box weighs only one ounce, so it can be worn by any size dog. It snaps right on to your pet's existing collar so he doesn't have to wear a second collar. It's adjustable sensitivity levels allows you to customize it to recognize your dogs unique bark.

When your dog begins to bark, the bark collar receiver recognizes the unique pattern. The bark control box then emits a loud sound that startles your dog, disrupting its barking and discouraging it from continuing. While very effective, it is perfectly harmless.

Your dog soon learns that barking causes the unpleasant noise, stops barking, and the training is complete.

Ultra-Light Anti Bark Collars Feature:
• Great for even the smallest dogs. The lightest bark collar box available - weighs only 1oz! 1.9 cubic inches
• Can be attached to your existing collar
  • (one inch width or less. No need for your dog to wear a second collar)
• Adjustable sensitivity levels so you can be sure the bark collar box will detect your dogs bark every time
• Uses loud but harmless audible sound to discourage barking
• Comes with "Understanding Why Dogs Bark" Video
• Replaceable Battery (included)
• Lifetime Warranty

Collar senses the vibration of your dog's vocal chords and sends a corrective vibration or high frequency sound to distract and irritate the dog. Your pet soon learns that his own barking sets off the correction. He begins to curtail his barking to avoid the correction and soon gets into the habit of being quiet.

Sound & Vibration anti-Anti Bark Collars Features at a Glance:
• Easy to use
• 2 Modes: Sound or Vibration
• 3 levels of correction (Low-Med-High) for sensitive to stubborn dogs. Adjust to your dogs particular personality.
• Adjustable nylon collar (one size fits all) with plastic quick-release clasp
• Very lightweight box. Just 60 grams.
• Water resistant (shower proof, not waterproof)
• Uses 3 easy-to-replace LR44 1.5 v batteries (included).
• For dogs over 25 pounds.
• 3 year manufacturer warranty

Attach snug to the neck for best response.

PerfectBark technology means there are no false corrections. The collar cannot be set off by another dog or loud noises because it requires both vibration from the contact points and sound into its microphone.

When the dog barks, the collar starts with a very low correction and continues to climb in intensity until the dog stops barking. 18 levels gives it a very wide range, but the dog never receives more than it takes to make the point. Collar resets after 30 seconds of silence.

Sportdog Ultimate Anti Bark Collars Feature:
• Small size makes it ideal for dogs from 5 to 100 lbs.
• Eliminates false correction. The collar can only be activated by the barking of the dog wearing the collar, not by other dogs' barking or loud noises nearby.
• 18 levels of correction automatically adjusted until barking ceases
• Completely waterproof. Can even be submerged, so your swimming dog is no problem.
• Bark collar can be used indoors or out, while you're home or away.
• Comes with a 28" hunter orange waterproof collar.
• Includes battery 6 volt lithium battery module that lasts for about 6 months
• On/Off Switch
• Recommended for barking dogs 5 to 100 lbs.
• Limited Lifetime Warranty