Examples are countertop cleaning, laundry pre-soak, wheel rims, engine cleaning, boat bilge treatment, and other such surfaces.

We recommend our 32-ounce spray bottle, Ready-to-Use (RTU) formula.

At a distance of 6 to 12 inches, spray using 2-3 pumps; this will create an approximately 6 inch circle of De-Oil-It. Allow to soak for a few minutes and then wipe away.

For heavy duty applications such as degreasing wheel rims, engines, and boat bilges we recommend 10-15 minutes soaking time before rinsing with water.

When cleaning glass we recommend spray, wipe, rinse; do not soak De-Oil-It on glass surfaces for more than a few minutes or it is possible to "etch" the glass.



Cleaning floors: use 2 cap fulls from the De-Oil-It 1 gallon (or 2.5 gallon containers); if using 32-ounce spray bottle, spray 3-4 times in the bottom of the bucket before adding water (approximately 2-2.5 gallons water).

You can expect to be able to clean 400-600 sq. ft. of floor surface. We recommend creating zones such that you do not exceed more than 400-600 sq. ft. Change water and De-Oil-It before cleaning the next "zone".

Cleaning cars, boats, etc.: use 1-2 cap fulls of De-Oil-It in the bottom of a clean buck, fill with water. Using a sponge, clean rag or soft brush liberally apply De-Oil-It + water cleaning solution. Scrub as necessary to remove dirt and grime; rinse thoroughly.

Heavy equipment cleaning: such as construction equipment, trains, 40 ft. containers, etc. it is most likely necessary to use a pressure washer or power washer.

Power washing using 95-105 degree Fahrenheit hot water is preferred when creating your cleaning solution (De-Oil-It Industrial Strength Concentrate - "ISC" mixed with water). We recommend rinsing or power / pressure washing the surface to remove as much particulate matter as possible, then apply De-Oil-It cleaning solution (meaning De-Oil-It plus water), and soak for 15 minutes before power washing (uses hot water) or pressure washing (typically uses available non-heated water sources). During the soaking phase you might need to agitate with a brush to mix in the cleaning solution to the dirty areas especially if caked with sludge (however the action from the pressure/power washers is sufficient in most cases). Rinse thoroughly, and repeat until desired results are obtained.

We recommend a 1:1 solution of De-Oil-It ISC plus equivalent measure of water for very dirty surfaces (perhaps caked with sludge, oil or hydraulic fluids that have leaked and caked with dirt). Or you can effectively clean heavy duty equipment surfaces down to a 4:1 solution (4 parts water, 1 part De-Oil-It). The most concentrated cleaning solution we recommend is 1:3, meaning 1 part water, 3 parts De-Oil-It).

DO NOT USE ISC (De-Oil-It Industrial Strength Concentrate) by itself; De-Oil-It requires water in the cleaning solution; just spraying on the concentrate followed by pressure washing is not recommended.  The only cleaning application whereby you would use ISC by itself is if an accredited environmental group, such as the EPA, allows De-Oil-It to contain oil spills on water; in this case you would surround the oil spill with ISC which will prevent / significantly slow down the spreading of the oil spill.

Parking Lots: It is necessary to calculate the square foot coverage of the entire parking lot. We recommend DRAFTLOGIC: this tool utilizes Google Earth so that you can visually see the surface you are measuring with relatively easy to use tools to create zones, and then add together the net square foot coverage of all zones.

Next you need to determine the level of cleaning; we break down cleaning into LIGHT, MEDIUM and HEAVY DUTY in the following manner:

Selecting between Heavy, Medium, and Light Duty of Large Area surfaces


DOI = De-Oil-It

RTU = Ready-to-Use formula

ISC = Industrial Strength Concentrate


Heavy duty is visible spills of oil, gas, diesel etc. on the surface and/or dark stains. The ratio of 1:1 happens to be the old De-Grease-It formula and works well for a first time cleaning if the area to be clean has a lot of visible standing oil, fuel or dark stains. This is a subjective call to decide on heavy duty, its all about observation; if it looks bad, then treat it in the most vigorous way possible but never Industrial Strength without dilution; RTU could work but most likely will need to ISC (call me to help calculate if RTU can be used, in almost all cases of “Heavy Duty” there is not enough concentration of RTU to work out, therefore ISC should be used to create the “cleaning solution” (which is H2O : DOI). I don’t expect a lot of cleaning to necessarily start off with Heavy Duty but if the parking lot, marina dock or other large square foot surfaces are really dirty then Heavy Duty is a good first cleaning before scheduling future cleaning efforts hopefully on the order of once every two weeks or so (which is what groups like RaceTrac gas station cleaning does – twice a month to maintain cleanliness).


Medium Duty is meant to start regularly scheduled cleaning tasks (such as every two weeks or once a month, for example); we also believe with input from professional pressure washer groups already using DOI that Medium Duty is good for the first 3 cleaning tasks; this seems to alleviate stains in concrete or at least reduce to the least visibility possible. Medium duty cleaning is 4:1 which is exactly RTU.


Light Duty is meant to be regularly scheduled cleaning of large square foot surfaces after the initial more concentrated cleaning solutions are utilized. What we are trying to accomplish is two items: first, that the surface area cleanliness can be maintained; second, that for environmental preservation the light duty cleaning will continually degrade hydrocarbons that have been built up in the past , and are constantly added to the environment on a daily basis. Light duty is formulated with Florida EPA in mind, meaning the 30:1 ratio is what is allowed to be used for water runoff into grasses, water and storm drains. Obviously if during the course of regularly scheduled light duty based cleaning, if a situation develops to utilize a medium duty or even heavy duty cleaning then that can be performed before returning to light duty preventative measure cleaning. In some cases it might be possible to utilize RTU inventory to create the cleaning solution but there are some cases this might not be viable (especially when the surface area is very large); for the most part since there are many cases mathematically whereby using RTU doesn’t cut the mustard we are requesting to use ISC to formulate Heavy Duty and Light Duty cleaning solutions

Once you have determined your level of cleaning follow these steps to calculate total gallons of fluid required (water plus De-Oil-It), and the amounts of De-Oil-It ISC to create your cleaning solution:

Step 1: Calculate a square foot measurement of a parking lot, parking garage, dock area; something that using a bucket and mop will not tackle the task at hand, it would otherwise require pressure washing. For general cleaning not using pressure washing such as cleaning the fuel station area and boat that has just been fueled it is perfectly ok to use a sprayer such as a 2.5 gallon pump sprayer (or battery operated or electrically plugged in with outside extension cord) of approximately 20psi or higher. All we need to do is spray De-Oil-It properly set up with the dilution factor desired; preclean, spray on, soak, rinse (possibly agitating with a brush to dissolve stubborn stains).


Step 2: Decided on cleaning solution strength: Heavy duty, Medium Duty, Light Duty. See section below on “Selecting between Heavy, Medium and Light Duty cleaning of large area surfaces”

Heavy Duty = 1:1 water to DOI (use ISC); this dilution = “De-Grease-It”

Medium Duty = 4:1 water to DOI (this is RTU)

Light Duty = 30:1 water to DOI (use ISC, there are some cases to use RTU .. call me for help)

Step 3: Create cleaning solution

Heavy Duty 

SqFt * 0.0776 = gallons of cleaning solution

Gallons of cleaning solution * 0.50 = amount of DOI ISC

Remainder of cleaning solution ADD H2O

Medium Duty

SqFt * 0.0389 = gallons of cleaning solution

Gallons of cleaning solution * 0.20 = amount of DOI ISC

Remainder of cleaning solution ADD H2O

Light Duty

SqFt * 0.0194 = gallons of cleaning solution

Gallons of cleaning solution * 0.03 = amount of DOI ISC

Remainder of cleaning solution ADD H2O

Step 3: preclean the surface to be washed This can be by broom but most of our pressure washers hose off the surface to get rid of particulate matter (dirt, pebbles, etc.); this also helps to add moisture to assist with Step 2


Step 4: Apply cleaning solution by a sprayer onto the surface, allow to soak for 15 minutes. This will most likely be much easier using a sprayer that can deliver 20-25 psi minimally (higher is ok but not always necessary). Spray the cleaning solution onto the surface, soak for 15 minutes, possibly agitate using a broom for stubborn stains.


Step 5: RINSE. Most likely at this step a pressure washer will be utilized. In some cases pressure washing groups have added a couple cup fulls of De-Oil-It to the soap container on the pressure washer; this isn’t mandatory but in some cases if the surface is really dirty this isn’t a bad idea, it just requires more time and effort to rinse.


Step 6: OBSERVE. With experience cleaning large surfaces such as parking lots the power of observation can help determine if another application is required or just wait for the next cleaning cycle. In large remediation projects on soil at this step hydrocarbon measurement dictates applying another cleaning solution; for most pressure washing jobs it’s a done deal after cleaning and the reason for regularly schedule cleaning is to utilize multiple cleaning tasks to maintain and for each task the stains get lighter and lighter (unless during the waiting time more oil leaks occur – it’s a never ending battle, but you would be cleaning in the most environmentally responsible way possible!).


Washing small square foot areas such as driveways we are finding that using a 1.5 to 5 gallon pump or electrically assisted sprayer putting out 20-25 psi minimally (higher PSI is ok but “why get carried away ?”). All that is needed is to get a thin layer of DOI on the surface, soak for 15 minutes, possibly agitate with a broom to work in the DOI into stains. For the most part it might be easier to use the 32 ounce spray bottle to spray 3 pumps directly onto an oil leak on the driveway and coat directly on and slightly off to the side of the stain / spill; but depending on how large this is or if you want to wash the entire driveway why not use a 1.5, 2, 2.5 or 5 gallon sprayer that delivers possibly more evenly, less effort than squeezing a 32 ounce spray bottle. Using RTU is perfectly fine for adding directly to a 1.5-to-5 gallon sprayer; there is no need to further dilute. If the driveway is really bad then multiple applications using RTU is required but if needed this kind of task might require ISC to create a 1:1 heavy duty cleaning solution; it all depends on how dark the stains are; concrete is particularly nasty because of the porous nature and the calcium in cement binds hard to oil making cleaning a choir.


OIL REMEDIATION: Please contact us at so we can provide the recommended methodology using one of two procedures; the first is for soil contamination up to 2 feet in depth; the second is cleaning soil contamination greater than 2 feet in depth.

This proven system has reduced conventional oil remediation cleaning of soil from approximately 3-4 months down to approximately 4-6 weeks using a range of 3-8 applications.