About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

WENDOWERK®
Neem oil

The neem oil from WENDOWERK made a very good impression in our test.
The product is supplied in a sturdy 1 litre bottle with a high-quality 300 ml spray bottle and a 15 ml measuring cup . In addition to the atomiser and spray function, the spray bottle is characterised by good and stable workmanship. The neem oil is mixed with an emulsifier and can be used for spraying or watering immediately after mixing with water. The environmentally friendly and eco-friendly active ingredient is particularly impressive due to its ease of use in the home and garden. In addition, neem oil provides natural plant protection and natural pest control.
A product information sheet or additional instructions for use would be helpful to reduce the contents of the bottle to the essentials and thus make it easier to read.

Advantages

✅ Complete set
✅ Suitable for indoors and outdoors
✅ For watering and spraying
✅ Direct application possible
✅ Environmentally friendly active ingredient
✅ Natural pest control and plant protection

Disadvantages

❌ Odour of the neem oil
❌ Own calculation of the mixing ratio
❌ Application instructions on the bottle

The first impression

The packaging and labelling

ℹ️ Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be ensured.

CriterionRemarkPoints achieved*
Product protectionBox is sturdy, neem oil and spray bottle are adequately protected, but measuring cup is not90 points
Sustainability PackagingUnnecessary packaging waste was avoided, items packed compactly100 points
MiscellaneousCustomised cardboard packaging of the product100 points
Total97 points
Weighting: 10%
*The maximum score is 100 points
Neem oil set in shipping carton

The neem oil from WENDOWERK was delivered in a perfectly fitting cardboard box. The box was undamaged and could be easily opened with a sharp object. The box contained the neem oil, the spray bottle and the measuring cup. The neem oil bottle and the spray bottle were undamaged, only the measuring cup had slight dents, but these did not impair its function. There was no further packaging for the individual items, but this would be useful as the measuring cup would be better protected during transport.
In terms of sustainability, it should be noted that the cardboard box is reusable and no plastic packaging was used. Overall, the neem oil from WENDOWERK makes a very good impression.

After unpacking

Package contents and instructions

ℹ️ Most people’s first impression after unpacking is immediately memorable. Are the contents of the pack complete and does the manufacturer make it as easy as possible for me to use the product straight away?

CriterionRemarkScore achieved*
Package contents & scopeNeem oil with spray bottle and measuring cup100 points
Instructions for useon neem oil bottle in German, a lot of text in little space, discrepancy in the mixing ratio information80 points
Contact informationon neem oil bottle, no telephone number available90 points
Total90 points
Weighting: 10%
*The maximum score is 100 points

The packaging contains a bottle of neem oil, a spray bottle and a measuring cup.
The product packaging of the neem oil contains information about the neem oil, the ingredients as well as dosage and application instructions in German.
An additional product information sheet would be desirable to improve readability. In addition, the information on the mixing ratio on Amazon and on the product differs. As an example of the mixing ratio, 1 litre of water is given, but as the spray bottle holds 300 ml, the user needs to convert this.
The contact details can be found on the product packaging in the form of an address and e-mail address. Amazon also states that customer service can be contacted by email.

The first time in your hand

Product processing and appearance

ℹ️ Before we start the practical test, we take a close look at the product processing. How high quality are the materials used? Is the look and feel satisfactory?

CriterionRemarkScore achieved*
Visual appearanceappealing design with recognition value, lots of text in little space100 points
ProcessingHigh-quality workmanship100 points
StabilityHigh stability100 points
Sustainability of the productEnvironmentally friendly and eco-friendly product with natural active ingredient100 points
MiscellaneousLong product life, inherent odour95 points
Total99 points
Weighting: 20%
*The maximum score is 100 points
Neem oil mixture

The neem oil is filled in a 1 litre bottle with an attractive design and high recognition value. In addition to the spray function, the spray bottle also has an atomiser function. The measuring cup is labelled with the units 2.5 ml, 5 ml, 10 ml and 15 ml. All items have a high-quality, sturdy finish and make a very good impression in terms of their durability. The natural, environmentally friendly and eco-friendly active ingredient of the product speaks in favour of its sustainability. The oil has a honey-like consistency and a characteristic odour. It should be emphasised that the 1-litre bottle promises a long product life due to the recommended dosage.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

ℹ️ Our practical test is the most relevant and therefore the most important. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

CriterionRemarkScore achieved*
ApplicationSimple, quick application, little time required, indoors and outdoors100 points
Duration of applicationRegular, individual application, spray once a week, shorten the period if necessary100 points
EffectivenessSuccessful, environmentally friendly plant care and pest control100 points
Consistency, odourviscous, inherent odour of the oil90 points
Mixing ratioDeviation from mixing ratio recommendations (Amazon: 1:100, packaging: 1:1000), calculation required90 points
Total96 points
Weighting: 40%
*The maximum score is 100 points

Neem oil from WENDOWERK is an environmentally friendly and eco-friendly method of pest control and plant care for indoor and outdoor use. The application is simple and requires little time, as the neem oil can be used immediately after mixing with water.
It is recommended to spray the top and bottom of the leaves evenly once a week. If necessary, the interval can be shortened to every 48 hours. To avoid damage to the plant or ineffective application, the mixing ratio should not be exceeded and the application should not be carried out in strong sunlight or rain.
In this practical test, an ivy plant infested with spider mites was treated. As different recommendations for the mixing ratio could be found on Amazon and on the packaging, the mixing ratio of 5-10 ml to 1 litre of water was used as an example. This means that 2.5 ml of neem oil was used per 300 ml of water.
In order to obtain a meaningful result about the success of the pest control, the test was carried out over a period of 4 weeks. Spraying was carried out every 3 days. At the beginning, the plant lost some leaves due to the pest infestation. After just 2 weeks, the first successes became apparent. New, healthy leaves grew on the plant and the pest infestation was no longer present. To maintain the success, the application was changed from every 3 days to once a week.
Overall, it can be said that we liked the neem oil from WENDOWERK very much in the test and its effectiveness can be confirmed.

Price/performance ratio

and ratings from consumers

ℹ️ Finally, we look at how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also analyse consumer reviews and check whether the critical and positive reviews are actually justified.

CriterionRemarkScore achieved*
Price / performance ratioVery good price/performance ratio100 points
Rating cut4.6 out of 5.0 on Amazon80 points
Total90 points
Weighting: 20%n*Themaximum score is 100 points


On the Amazon platform, consumers rate the product with an average of 4.6 stars. One criticism is that it must be used regularly and over a longer period of time to achieve lasting results and that spraying should be carried out in a well-ventilated room or outdoors due to the neem oil’s own odour. Many customers appreciate the simple application, the long-term purchase of a neem oil bottle, the natural, environmentally friendly active ingredient and the convincing effect against pests and for plant care. It is also recommended to spray the leaves of the plants on both sides. In our practical test, we were able to confirm that neem oil is a worthwhile investment and is easy and effective to use to care for plants and combat pests.

Prices of up to €67.96 per litre are charged on the Internet for equivalent products. Very inexpensive products are available from as little as €16.00/litre. The neem oil from WENDOWERK is currently in the lower price segment with a price of €28.95. The price ratio is very good for the quality and scope of services that you receive.

Overall result

WeightingPoints achieved*
1. packaging & labelling10%97 points
2. package contents & instructions10%90 points
3. product processing & appearance20%99 points
4. in the practical test40%96 points
5. price/performance & consumer reviews20%90 points
Total95.5 points
*The maximum score is 100 points
Neem oil
of the brand
WENDOWERK®
achieved
95
Points in our test and therefore passed. The test was carried out in the test period
02/23
and is stored in our database under the licence number
230208002
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observation and do not include long-term or laboratory tests. The test ratings reflect the opinion of our experts and are based on careful analysis. We would like to emphasize that these evaluations do not claim to be exhaustive and reflect both subjective and objective impressions. The assessments are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a reputable and thorough testing process, which has been developed in a long and professional process in close cooperation with our experts.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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