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Your Guarantee
Our Promise to You

At Bio-Gard we stand by the quality of each of our Muck-Munchers products and our service too. If for any reason you're not satisfied with your purchase of Muck Munchers XL within 28 days, you can return the remaining product to us for A FULL REFUND.

For Muck Munchers single application products for more severe problems, we are certain that you will have every success. Should the product fail to meet your performance expectations, then please contact us at, so that we can discuss and recommend a suitable alternative course of action to resolve your septic tank problems. Naturally, you can return any product in its original condition to us within 28 days for an immediate exchange, refund or credit.


Our Guarantee to the Environment

It is a principal ethic at Bio-Gard that any product we sell will have no detrimental environmental impact.The Environment Agency and EU Commission have concerns about waste water from effluent treatment plants, septic tanks and cesspits, and, pollution of water courses. Muck Munchers natural, non-chemical, non-toxic, non-pathogenic formulations ensure a very positive effect on reducing any pollutants, ensuring the resulting water released in to the surrounding soil is cleaner and purer.

A Personal Note from Martin Harvey about Muck Muncher’s Guarantee

Martin Harvey Martin Harvey of Muck Munchers

I launched Muck-Munchers XL after a great friend, who is now my technical and product development director, introduced me to this fast-acting, low-cost and environmentally beneficial product that works so effectively in areas without mains drainage.

It really worked at our house - and I’ve now forgotten about my septic tank problems. I’ve since introduced countless friends to the product, mostly on the basis of ‘if it doesn’t work don’t pay me.’ Thank goodness it worked for all of them.

So, the reason I can make a money-back promise when you buy Muck Munchers XL is that I know, from my friends, my customers and family too, just how effective and reliable this natural, environment-friendly product is.

My guarantee is simple and straightforward - if Muck Munchers XL doesn’t work for you within 28 days please tell us. That way we can put it right for you, either with some help and advice on what may be effecting performance, or you can return the remaining product and we’ll send you back every penny you spent on buying Muck Munchers XL.

Best Wishes Martin Harvey's Signature
Martin Harvey

Our Product Range

Muck Munchers XL 12 Month Pack
The Market Leading Septic Tank Treatment
Muck Munchers XL The ultimate natural biological septic tank waste digestion treatment, saving £’000’s on pump-outs

Muck Munchers Digesta
Instantly Increases Aerobic Microbial Activity
Muck-Munchers Digesta Keeps Sink and Bath Wastes Clean and Blockage Free.

Oxy-Gen Eco Bleach Triple Pack
The Eco-Friendly Chlorine Bleach Alternative
Oxy-Gen Bleach Triple Pack Specially formulated for use in homes with septic tanks with zero environmental impact.

Triple Action Bog Busters
Intensive Treatment for Problem Systems
Bog Busters High performance treatment to reinvigorate stagnant septic tanks and slow draining soakaways.

Kick-Start Bio-Booster
Post Pump-Out and Starter Treatment
Kick Start Bio-Booster A specially formulated microbe treatment that energises and invigorates septic tanks and drainfields.

Mega Munchers 12 Month Pack
Scalable Larger System Treatment Programme
Mega Munchers Flushable sachet treatments, for rural leisure complexes, pubs and hotels, camping and caravan parks.

Oxy-Tonic Biomass Accelerator
Instantly Increases Aerobic Microbial Activity
Oxy-Tonic Bio-Accelerator Guaranteed to convert smelly anaerobic tanks in to healthy aerobic septic systems.

N-Virol Algae, Moss and Lichen Killer
Concentrated Professional Algae, Moss and Lichen Killer
Oxy-Tonic Bio-Accelerator The perfect way to clean up sad, unsightly, ingrained and algae covered surfaces.