Indoor Pet Barrier for Dogs
- Training Collar
- Black
- 12.3 ounces
- 3 years
- Better rated than 88%
A compact indoor containment option for keeping a single dog out of off limit rooms, backed by a 3 year warranty.
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How it ranks among the 100 training collars we track
4.7★ across 18 Amazon ratings, Bayesian-smoothed toward the category average.
18 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
100+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 100 training collars we track - how the scorecard works · full training collars data report. Confidence: limited - limited rating history.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
An indoor wireless pet barrier from UltraCrab (model MGW) that pairs a base unit with a waterproof, rechargeable training collar to keep one dog out of designated rooms or areas without physical fencing.
Despite being filed under Training Collars, this is sold as a complete indoor containment system, described in the listing as a GW dog fence, not a standalone training collar. It ships as a 1 dog system with two included lithium ion batteries and a 3 year warranty.
- Wireless indoor pet barrier
- 1 dog system included
- Waterproof rechargeable collar
- 2 lithium ion batteries included
Who it's for
Owners who want to block a dog from specific indoor rooms, like a kitchen or nursery, without installing a physical gate. Not built for outdoor perimeter containment.
Strengths and trade-offs
Drawn from this product's published specifications.
- Rechargeable and waterproof collar included
- No physical gate installation needed
- 3 year warranty
- Compact package (8.9 x 6.1 x 1.65 inches)
- Covers one dog per system
- Indoor use only per product description
Performance notes
The system relies on a wireless signal paired with the rechargeable collar to mark off limit zones indoors. It's built as a single dog setup, so multi-dog households would need additional collars or a different system.
Specifications
| Brand | Indoor |
|---|---|
| Dimensions & fit | |
| Item Weight | 12.3 ounces |
| Item Package Dimensions L X W X H | 8.9 × 6.1 × 1.6 inches |
| Construction & materials | |
| Color | Black |
| Included components | |
| Included Components | GW dog fence |
| Warranty & support | |
| Warranty Description | 3 years |
| Other details | |
| Item Model Number | MGW |
| Manufacturer | UltraCrab |
| Directions | GW dog fence |
| Model Name | MGW |
| Specific Uses For Product | Indoor |
| Target Audience Keyword | Dogs |
| Customer Reviews | {'ratings_count': '18', 'stars': '4.7'} |
| Batteries | 2 Lithium Ion batteries required. (included) |
| Asin | B0GWS1NC3C |
| Date First Available | December 8, 2025 |
How it compares
This product against the closest alternatives we track in training collars.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Indoor Pet Barrier for DogsThis product | 4.7 / 5 | 18 | 2.7 / 5 |
| Educator ET-300 Mini E Collar for Dog Training with RemoteEducator | 4.5 / 5 | 8,500 | 4.5 / 5 |
| E-Collar ET-300 Mini Educator Remote Dog Training CollarE-Collar | 4.6 / 5 | 6,600 | 4.4 / 5 |
| AI Dog Shock Collar 2 DogsAI | 4.4 / 5 | 2,300 | 4.3 / 5 |
| Garmin Sport PRO BundleGarmin | 4.6 / 5 | 1,500 | 4.3 / 5 |
Similar training collars from other brands
Questions about the Indoor training collars
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does this work outdoors?
The product is described as an indoor pet barrier and dog fence, intended for keeping areas off limits inside a home.
How many dogs does one system cover?
It's sold as a 1 dog system with a single collar.
Is the collar waterproof?
Yes, the training collar is listed as waterproof and rechargeable.