GPS Dog Fences: How They Work and When the Old Wire Is Still Better
Last verified: August 2026
A GPS fence lets you draw your dog's boundary on a map — no wire to bury. It's clever, but it's not right for every yard. Here's how it works, what it costs, and when the old wire wins.
About GPS dog fences
A GPS dog fence is a collar that knows where it is by satellite. You walk your property or draw it on a map in an app, and the collar warns your dog with a tone (and, if you allow it, a gentle correction) as they approach the edge — no wire, no transmitter box, no digging. The two big names are SpotOn and Halo.
They're not cheap, and they charge differently. SpotOn's collar runs about $999 up front but needs no subscription for the basic fence. Halo's collar is more affordable at roughly $524 to $599, but requires a membership of about $10 a month (a little less paid yearly) to keep the containment working. Over a few years the total costs land close together; the longer you own SpotOn, the more it pulls ahead.
The honest catch is that GPS needs a clear view of the sky. Heavy tree cover, deep woods, or a spot tucked against a hillside can make the boundary wobble by several feet — which is exactly the situation where an old-fashioned buried-wire fence, which never drifts, is still the safer bet.
When to skip the DIY and just call: Deciding if your yard suits GPS or needs wire · Setting up the boundary and training your dog to it · Comparing the true multi-year cost of each option.
Common Questions
1 How does a GPS fence work?
- The collar uses satellite GPS to know its location, like the map app on your phone.
- You set the boundary by walking it or drawing it in the app.
- As your dog nears the edge, the collar plays a warning tone.
- If they keep going, it can give a gentle vibration or static correction you've enabled.
- You watch and adjust the boundary any time from your phone.
2 What does SpotOn vs. Halo cost?
- SpotOn's collar is about $999 up front with no required subscription for the fence.
- Halo's collar is roughly $524 to $599 but needs a membership of about $10 a month.
- Halo's yearly membership brings the monthly cost down a bit.
- Over three years the totals are close; SpotOn gets cheaper the longer you keep it.
- Factor in that a collar can be lost or damaged, so a warranty or plan may matter to you.
3 When is the old buried wire still better?
- In heavy tree cover or deep woods, GPS can drift several feet — a wire never does.
- For a small, precisely-shaped yard, a wire holds a tighter, more reliable line.
- If you don't want an ongoing cost, a one-time wire system has no subscription.
- For dogs that need an exact, unchanging boundary, wire is the safer choice.
- The trade-off is the install work — burying the wire around your property.
4 How do I train my dog to it safely?
- Follow the maker's training plan — usually a couple of weeks, short daily sessions.
- Start with the tone-only warning and flags marking the edge, so your dog learns visually first.
- Never use it as punishment; it's about teaching a boundary calmly.
- Make sure the collar fits properly and check the skin under it daily at first.
- No fence replaces supervision near roads — and I'm happy to help you set up and dial in whichever you choose.
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