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"At Last...A Unique Way To Finally Eliminate The Black Water Tank Odor From Your RV Or Motor Home That Uses Zero Chemicals And Is Easy To Install... Guaranteed!"


The Green Kap Enviro-Vent eliminates rv holding tank odors forever whether you are travelling or parked. Ideal for RV’s, Campers, Motor Homes, Buses, Chemical toilets, Port-a-Potties and Marine toilets.

You don’t need to be a handyman to follow the easy installation instructions. The Green Kap Enviro-Vent can be easily mounted after the original cap is removed from the holding tank vent on an RV’s roof top, and it becomes the new cap.

“I have wasted many dollars trying to get rid of the black water tank smell in my camper that didn’t work. For the last five years I have been using the Green Kap Vent…”
Lonnie & Sharon Stalsby, Texas


Can I Really Reduce Or Stop Using Chemicals?

This amazing new vent is designed to work as a true Venturi. It is designed so the forward opening always faces the direction of air movement whether parked or in transit. The air enters the vent and is then compressed as it is forced through the tube  causing the air flow to speed up. This principle is the Venturi effect and it causes a low pressure area sucking the odors out of the holding tank, acting as a vacuum. The methane gas along with the unpleasant holding tank odors are sucked out.

Here Are Just Some of the Problems When You Use Chemicals

  • Using Chemicals in the holding tanks is a costly chore. Some brands sell for more than $20 per litre
  • Spillage can and does occur leaving a mess on you and the the ground
  • Even after the chemicals have been added there is a constant odor
  • Tank contents (including chemicals) are emptied into septic systems at RV parks, roadside rests, Marinas, etc.
“We have been using the Green Kap Enviro-Vent for 3 years now and I haven’t touched any chemicals ever since.”
Jayne & Bob Schwartz, Michigan
How does the Green Kap Enviro-Vent Work?

Enzymes cause the natural decomposition of the solids and Oxygen is the food for the natural enzymes in the waste in your black and grey water holding tanks. By Installing the new Green Kap Enviro-vent you now have constant air flow moving through the holding tanks creating an oxygen rich environment and in this new oxygen rich environment these enzymes are constantly multiplying. Therefore, no more need for chemicals.

“The installation of the Green Kap vent was easier than I expected. I don’t have to worry about filling up my tanks with chemicals anymore. I don’t hesitate recommending the Green Kap Enviro-Vent to all my friends.”
Larry Edison, Colorado

30 Day 100% Money Back Guarantee

Your satisfaction is our main priority here at Green Shift Technologies. We want you to get the most out of the Green Kap Enviro-vent. If you are having any problems what-so-ever we will always help you. But if you find our product is not perfect for you, you have a full 30 days to let us know and we will happily refund you in full.

So what are you waiting for? Take action and purchase the Green Kap Enviro-Vent for the introductory price of $59.95*. (Includes Shipping)

  • Secure Order Page where you can confidently place your order for the Green Kap Enviro-vent.
  • Green Kap Enviro-vent PDF User Guide – You will be given a link to download a PDF copy of the documentation that will be included in your Green Kap Enviro-Vent. This includes detailed installation instructions and a copy of our “iron-clad” guarantee.
  • First Class Support - We aim to offer not only first class products, but also first class support. If you have any questions or problems you can contact us with email or our toll-free number and we will respond quickly. (usually within 48 hrs)
  • A lifetime of odor and chemical free use of your motor home or RV.
  • Made in North America – The  Green Kap Enviro-vent is assembled and made from materials entirely from North America

* Free shipping is included for orders in the U.S. and Canada only. If you are outside of North America then a flat rate of $20 US will be added to your order.