SOG is Germany's leading toilet ventilation system for caravans and motorhomes. By extracting odours directly from the waste cassette, SOG keeps your bathroom fresh while eliminating the need for toilet chemicals.

SOG System Benefits

How SOG Eliminates Toilet Odours

Traditional cassette toilets can allow unpleasant odours to enter the bathroom whenever the toilet slide valve is opened. SOG solves this problem by creating negative pressure inside the waste cassette.

When the toilet is used, a powerful 12-volt extraction fan automatically activates and draws air from the toilet bowl into the waste cassette. Any odours are immediately extracted and vented outside the vehicle before they have a chance to enter the bathroom.

Because odours are removed directly from the source, your caravan or motorhome bathroom stays noticeably fresher, even during extended trips or frequent toilet use.

Whether you're travelling with family, hosting guests, or living on the road full-time, SOG helps create a more comfortable bathroom experience without relying on chemicals or masking fragrances.

Fresh air in. Unpleasant odours out. That's the SOG difference.

How SOG Saves You Money

Most cassette toilets rely on chemical additives to control odours and break down waste. While effective, these chemicals create an ongoing cost that continues for as long as you use your toilet.

A SOG system eliminates the need for toilet chemicals by continuously ventilating the waste cassette whenever the toilet is in use. Instead of regularly purchasing chemicals, you can enjoy a fresh-smelling bathroom using only the SOG ventilation system.

Over time, the savings on chemicals add up. The more frequently you use your toilet, the faster a SOG system pays for itself. For regular travellers, full-time motorhome owners, and extended camping trips, a SOG can become one of the most cost-effective upgrades you can make.

No chemicals. No ongoing chemical costs. Just long-term savings every time you use your toilet.

Find Your SOG Kit

Choose your toilet model below to find the correct SOG kit.

Not sure which toilet you have? Contact us and we'll help identify the correct kit.

Three Different Ways to Install a SOG Kit

Watch SOG in Action

Why Buy From Us?

• NZ-based support and advice
• Help choosing the correct SOG kit
• Spare parts available
• Fast dispatch on stocked products

Purchase a SOG Kit Today

Click your toilet model above or browse the full SOG range below.

Frequently Asked Questions

Does the SOG fan motor run continuously?

No. The fan only operates when the toilet slider valve is open and automatically switches off when the slide valve is closed.

Are toilet chemicals still required?

No. SOG systems are designed to operate without toilet chemicals. Most users run their cassette toilet chemical-free and only use cleaning products when cleaning the cassette itself.

How much power does a SOG system consume?

The 12-volt fan consumes approximately 0.84 watts and only draws power when the toilet is in use.

How often does the filter need replacing?

For SOG Door and SOG II Floor models, the activated carbon filter should typically be replaced once per year. SOG Roof models do not require a filter and are virtually maintenance free.

Will I notice smells outside the vehicle when using a SOG system?

Under normal operation, odours are filtered before the air is vented outside. Door and Floor models use an activated carbon filter to minimise odours, while Roof models vent above roof level and do not require a filter.

Can I install a SOG system myself?

Yes. DIY installation is very popular and all SOG kits include installation instructions. Many customers successfully install their own SOG systems.

Can a motorhome or RV workshop install a SOG system?

Yes. Most motorhome and RV workshops are familiar with SOG systems and can usually assist with installation if you prefer not to install the kit yourself.

Do SOG systems work with a second cassette?

Yes. A full cassette can be removed and stored while using a second cassette, making SOG systems suitable for extended trips and larger motorhomes.

Why can I sometimes notice odours when opening the toilet lid?

In some toilet models, small amounts of moisture and residue can remain in the bowl under the closed lid. In warm conditions this can occasionally cause odours from the bowl itself rather than the cassette.

How do I know which SOG kit fits my toilet?

Simply identify your toilet model and match it to the correct SOG kit. If you're unsure, contact us with your toilet model details or send us a photo of your toilet or cassette door and we'll help identify the correct SOG kit.

Ready to Install a SOG System?

Find the correct kit for your toilet model and enjoy a fresher caravan or motorhome bathroom.