Mr. Bacteria No.4 Bio-enzymatic cleaner for your COMPOST

Natural bacterial compost accelerator for accelerating the maturation of garden compost while preserving all its nutrients and manure values.

Accelerates compost maturation by up to three months.
Odour and mould-free compost.
Quality compost = no chemical fertilizer.
Preserves the nutritional value of compost.
Suitable for all vegetable and domestic BIO-waste.
Repels intrusive insects.

This product is currently unavailable. We can notify you once it's available after activating an availability alert.
  • Promotional packages

    Promotional packages

  • Goods in stock

    Goods in stock

  • Fast delivery

    Fast delivery

  • European product

    European product

  • Verified by customers

    Verified by customers

  • Free shipment possibility

    Free shipment possibility

  • Sending the order within 24 hours.

    Sending the order within 24 hours.

  • Guarantee of original and quality

    Guarantee of original and quality

Detailed product description

Detailed description:

Natural bacterial compost accelerator for accelerating the maturation of garden compost while preserving all its nutrients and manure values.

A completely natural and ecological bio-active preparation of Mr. Bacteria No. 4 - compost accelerator - is designed to speed up composting. The usual length of composting is in the range of one year. Mr. Bacteria No. 4 can significantly speed up the process of composting garden waste and selected biological waste from your household. Mr. Bacteria No. 4 is a mixture of bacterial cultures mixed with unprocessed enzymes, emulsifiers and nutrients, specially designed for composting organic waste (waste after seasonal pruning of ornamental shrubs - wood chips, bark, sawdust, grass, leaves, fruits, vegetables, flowers, household biowaste, etc.). The product works in two phases: speeding up the start-up and consequently significantly shortening the whole composting process. By using Mr. Bacteria No. 4, the fertilizer values ​​of the compost are maximized. The result of using Mr. Bacteria No. 4. is shortening the length of composting.

Bacterial force:

We have been selling bacterial preparations for more than 15 years and we know that the bacterial strength of the preparation (i.e. the number of bacteria that the product contains) is particularly important in the production of high-quality and truly effective bacterial mixtures.

The higher the content of bacteria in the product, the higher its bacterial strength. That is why we maximize the number of bacteria in each of our products, thus increasing its effectiveness!

We declare that our products contain an extra number of bacteria, which help to eliminate the odour and organic waste very effectively!

Instructions for use:

Pour the required amount of dry bacterial mixture into lukewarm water in a ratio of 10 measuring cups: 5 litres of water. Stir and allow to act for 45 minutes. Then pour the solution evenly into the stored compost. Put 10 doses / 1 m3 of compost once a month, you must double the first dose to 20 doses. Keep the compost moist enough.

The package also includes a practical measuring cup.


Deliver the product regularly, otherwise the biological cleaning process will be interrupted. When using the product, do not use aggressive disinfectant or acids and alkalis concurrently. In case of contact with skin or eyes, rinse immediately with plenty of water for 10 minutes. Store in a dry place at a temperature of 5 to 30° C in a closed container, out of reach of children. Minimum shelf life is 12 months from the opening of the product packaging, subject to storage instructions. A mixture of non-pathogenic microorganisms, bacteria, and nutrients. The product does not have the character of a dangerous preparation for human health in the sense of the criteria set by law.


  • Mr. Bacteria No. 1-14 mark of quality

    On our website you can buy products of the brand Mr. Bacteria under the designation of Mr. Bacteria No. 1-14. All products from Mr. Bacteria are made of the highest quality raw materials, which ensures their quality, high bacterial strength and functionality. Mr. Bacteria are tested by thousands of satisfied customers. Also try the quality and functionality of our products. We are happy for your satisfaction with the use of our products.

    Your Mr. Bacteria e-shop team!

  • Why Mr. Bacteria products

    • Guarantee of product originality
    • Made of the highest quality raw materials
    • High bacterial concentration and efficacy
    • All product range in stock
    • Shipment of the order within 24 hours
    • Thousands of happy customers
  • How to compost properly and take a use of a compost accelerator?

  • Bacteria and enzymes in septic tanks, wastewater treatment plants, ponds

  • How to remove the unpleasant smell of septic tanks or cesspools?

  • Removing unpleasant odour from domestic WWTP?

  • A few tips on how to keep your garden pond clean and clear. Have you heard of bacteria? They work great!!!

  • How to properly defecate the pond? Have you heard of bacteria?

  • How to get your pond started after winter

  • Try two guaranteed tips on how to maintain cesspools and septic tanks