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

Should any product fail to meet your performance expectations, then please contact us at customerservice@muck-munchers.co.uk, so that we can discuss and recommend a suitable alternative course of action to resolve your septic tank problems.

We unconditionally guarantee Muck Munchers XL and Mega Munchers for 6 months. If there is no improved septic tank performance we’ll send you your money back. You should normally expect improvements within 28 days, unless there is excessive waste in the tank.

All other products are covered by a minimum 2 month success guarantee.

We unconditionally guarantee Muck Munchers XL and Mega Munchers for 6 months.


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

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 family and 10’s of thousands of customers too, just how effective and reliable this natural, environment-friendly product is.

If Muck Munchers doesn’t work for you, even 6 months after purchase, please tell us.

My guarantee is simple and straightforward – if Muck Munchers doesn’t work for you, even 6 months after purchase, 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 by sending you back every penny you spent.

Best Wishes

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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 Government and Environment Agency 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.