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Tunnel Fill Bag

Tunnel Fill Bag

Regular price $ 69.99 USD
Regular price Sale price $ 69.99 USD
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Say goodbye to pesky gophers with our Tunnel Fill!

Simply add water to Tunnel Fill and watch it expand, deterring rodents from returning to your property! Tunnel FILL  seals the holes with natural ingredients and no special license required - it's biodegradable, non-toxic and safe for your family and pets! Gain peace of mind, with the Tunnel Fill and Tunnel Plug Combo.

Tunnel Fill is designed to effectively prevent landscape or yard damage caused by burrowing rodents. When applied, Tunnel Fill rapidly expands and forms a sticky mixture like applesauce, that is further reinforced by the Tunnel Plug. Natural spices used in the formulation repel rodents, making sure they stay away from treated areas.

One Tunnel Fill bag fills up to 200 ln ft of Gopher Tunnels after water is added!

Tunnel Fill can be used with any burrow including gophers, moles, squirrels, ground hogs, woodchucks, voles, skunks, badgers, rabbits, and more! 

Seal all gopher entrance/exit systems with a Wonder Soil Tunnel Plug

One 6 LB bag of Tunnel Fill fills up to 200 ln ft. of Gopher Tunnels after water is added!

Learn more here


Coco coir, natural spices and potassium polyacrylate polymers.


How to use Tunnel Fill:
Find the rodent's burrow and pour a handful of Tunnel Fill down the hole. Use your hose to flush water down starting on high pressure for one minute then medium pressure for two minutes. Go to the other end of the tunnel and repeat. Tunnel Fill will expand to completely fill a tunnel as it absorbs the water. Please wait after you add water for the product to fully expand!

1. Place Tunnel Fill on the entrance hole or in a container.
2. Slowly add water and mix well.
3. Plant directly on top of the tunnel plug!

How much do I need?
There are lots of variables to this including how extensive the tunnels are, the target and the quality of your water. Higher quality water allows more absorption so lower quality water will require more product.

An average gopher tunnel system in Southern California where our product was tested took about 1/2 of our small containers to fill one system. A system is several mounds, feed holes, nests, food storage areas etc.

We would recommend buying two pounds for most small areas You can always buy more product if needed but this is enough to do a few systems with some product left over in case of a second application or future gopher activity. If you have a large property a small property with a large number of tunnel systems 4- 5 pounds may be a good starting point. Again, you can always purchase more if needed. Farms, parks, golf courses and other large area facilities may consider 50 pound purchases most economical.

Pest control companies wishing to add this product to their available services would probably start with 50 pounds. This will fill 40-100 systems depending on water quality, how big the systems are, etc.

Safety Data Sheet

View our SDS here

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Wonder Soil

is the only environmental friendly dry compressed coco coir mix with added amendments of worm castings, mycorrhizae, kelp, nutrients and more!

Our products have outstanding water retention with dependable drainage and aeration in the root zone. Save up to 50% of water, fertilizer, and seed to help your plants thrive!

Customer Reviews

Based on 14 reviews
Jay Semerad

Tunnel Fill Bag

This stuff seems to work!

I have had trouble with a very persistent groundhog that has dug multiple holes around my house--they are so hard to get rid of that none of the local wildlife removal businesses even answered my calls. I tried Tunnel Fill, which plugged up two of the holes, as promised. One caveat--it will take way, way more than "a handful," as specified on the instructions, to fill a large hole like the ones groundhogs make. I used three bags in order to fill two holes. I am awaiting another shipment of Tunnel Fill to tackle the other holes, and I am hopeful. I haven't seen the groundhog digging at the filled holes so far.

Cindy Fatsis
Worked Great

One bag filled the entire hole! It’s spongy & weird looking but it worked great & it’s non toxic to the environment!

Hi Cindy!

We are so happy Tunnel Fill prevented your yard damage caused by burrowing rodent effectively.

Happy Gardening!
Wonder Soil Family

Mike Ibarra
Got my gopher.

It took awhile and I had to be persistent, but I finally got my gopher. Relocated it to a big field far from my house. Thank you, wonder soil!

Hello Mike!
We are so glad that our Tunnel Fill is exceeding your expectations and you took control of your lawn again!

Happy Gardening!
Wonder Soil Family

Gerry Lloyd
Works great

I use Tunnel Fill all the time. It’s an important part of my arsenal. If you use it diligently you can keep gophers from coming back.

Hi Mindi!
Thank you for your review! We are so happy our Tunnel Fill had met all your expectations!
Happy Gardening!