Cleansing Foam (BTD6)

For other uses, see Cleansing Foam (disambiguation).

Cleansing Foam

Sprays foam that removes Camo and Regrow and pops Lead Bloons.

Tower	Engineer Monkey — Path 2 — Tier 3
XP cost	2,000
Cash cost	$765 — Easy $900 — Medium $970 — Hard $1,080 — Impoppable

← Deconstruction

Overclock →

Cleansing Foam is the Engineer Monkey's path 2 tier 3 upgrade in Bloons TD 6. This upgrade adds an additional foam attack that can be targeted anywhere within the Engineer Monkey's range, continuously spraying its target with foam. Bloons that touch the foam will lose their Camo and Regrow properties, if they have it. Additionally, Lead Bloons (not DDTs) will lose their outer layers instantly upon touching the foam, even if Fortified. All attacks' speed is quadrupled for 1 second at the start of each round.

Mechanics

The Engineer Monkey's foam attack has a cooldown of 2 seconds, which is reduced to 1 second with the Faster Engineering upgrade. Each foam has a pierce of 10, which is increased to 15 by the Oversize Nails upgrade. Thicker Foams increases foam pierce by 3. With the Pin upgrade, foam slows down non-MOAB-Class Bloons that touch it by 0.5× for 1 second. Foam has a lifespan of 8.5 seconds. Foam can be targeted anywhere within the Engineer Monkey's range, including over obstacles and off the track.

Foam deals no damage to Bloons, other than Lead Bloons. When a Lead Bloon touches foam, its outer layer will pop instantly even if it is Fortified (this does not apply to DDTs). Foam removes the Camo and Regrow properties of any Bloon it hits, including DDTs. Each Bloon that touches it uses up one of the foam's pierce, even if the foam did not affect it in any way.

All attacks have their attack speed increased by 4× for 1 second at the start of every round. This is considered a buff and can be stolen by Lych.

If an Engineer Monkey has both the Cleansing Foam and Sentry Gun upgrades, the deployed Sentries remove Camo and Regrow properties as well as instantly pop Lead layers, but not necessarily damage Lead properties. However, the Sentries need external buffs to target Camo Bloons. These Sentries remove the Camo property from DDTs if given Camo detection, even if they cannot damage them due to the Lead property.

Stats

For a complete list of Engineer Monkey stats, see Stats:Engineer Monkey (BTD6).

This data was last updated for: version 55.1

Tower
Display range 60 units Footprint radius 7 units Targeting options First Last Close Strong

Attack
Cooldown 0.7s Offset (X, Y, Z) -1.11, 13.49, 10.7 Targeting Depends on targeting option Targeting range 60 units Filters Cannot target Camo
Projectile Pierce 3 Damage 1 Damage to MOAB-Class +1 Damage to Fortified +1 Damage type Sharp Speed 375 units/s Lifespan 0.24s Radius 2 units Filters Cannot hit Camo

Cleansing Foam
Cooldown 2s Offset (X, Y, Z) -1.11, 13.49, 10.7 Spread 4 Targeting Locked Targeting range 60 units
Ignores blockers
Projectile Pierce 1 Lifespan 5s Radius 1 unit Ignores blockers Splat Pierce 10 Lifespan 8.5s Radius 7 units Ignores blockers Removes Camo Removes Regrow Removes Lead

Start-of-round buff
Cooldown modifier ×0.25 Lifespan 1s

1-3-0

Spawner
Cooldown 10s Offset (X, Y, Z) -1.11, 13.49, 10.7 Targeting Random position Targeting range 60 units
Ignores blockers

Sentry

Tower
Display range 49 units Footprint radius 4 units Lifespan 25s Targeting options First Last Close Strong

Attack
Cooldown 0.95s Offset (X, Y, Z) 0, 7.1, 7.78 Targeting Depends on targeting option Targeting range 49 units Filters Cannot target Camo
Projectile Pierce 2 Damage 1 Damage to MOAB-Class +1 Damage to Fortified +1 Damage type Sharp Speed 300 units/s Lifespan 0.25s Radius 2 units Filters Cannot hit Camo Removes Camo Removes Regrow Removes Lead

2-3-0

Spawner
Cooldown 10s → 5s

Cleansing Foam
Cooldown 2s → 1s

0-3-1

Attack
Projectile Pierce 3 → 8 Damage type Sharp → Shatter

Cleansing Foam
Splat Pierce 10 → 15

0-3-2

Attack
Projectile Stun Multiplier ×0 Duration 1s Layers 1

Cleansing Foam
Splat Slow Multiplier ×0.5 Duration 2s Duration for MOAB-Class 0s Layers 0

Costs and sell values

Note: this list does not factor in Monkey Knowledge or other discounts.

Tiers	Total cost				Sell value
	Easy	Medium	Hard	Impoppable	Easy	Medium	Hard	Impoppable
0-3-0	$1,575	$1,850	$2,000	$2,220	$1,103	$1,295	$1,400	$1,554
1-3-0	$2,000	$2,350	$2,540	$2,820	$1,400	$1,645	$1,778	$1,974
2-3-0	$2,340	$2,750	$2,970	$3,300	$1,638	$1,925	$2,079	$2,310
0-3-1	$1,960	$2,300	$2,485	$2,760	$1,372	$1,610	$1,740	$1,932
0-3-2	$2,145	$2,520	$2,725	$3,025	$1,502	$1,764	$1,908	$2,118

Strategy

This section was last updated for: version 55.2

Cleansing Foam is a viable option for dealing with Camo Bloons in the early to mid game, however it lacks the pierce to be reliable against some rounds with dense Camo Bloons such as round 78. The ability to handle lead, camo, and regrow makes it cheap, flexible option in early-game ABR. It also has a niche in removing Camo from DDTs in the late game by targeting it slightly off the track so it doesn't waste pierce on other targets. The increased attack speed at the start of rounds helps produce enough foam before the Bloons arrive. Although Lych will steal the start-of-round speed buff to gain back Regrow, Cleansing Foam is consistent enough to maintain almost full uptime against Lych's Regrow properties.

Crosspaths are optional. 2-3-0 is more reliable Regrow removal, offering sentries that strip more Bloons and a faster dispersal of foam per second, and the start-of-round speed boost improves sentry production particularly in Boss Rush. Bottom crosspaths are preferred late-game to slow Super Ceramics and deal with denser Bloons.

Update history

For a complete list of Engineer Monkey changes, see Update history:Engineer Monkey (BTD6).

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Version 20.0

“

Continuing our efforts to make crosspaths meaningful and fit the style of each path more solidly, a number of crosspath and base level balance shifts were made.
— Update notes

”

1-3-0, 2-3-0

•  Larger Service Area now grants +4 range to Sentries

Version 21.0

“

Engineer is quite poor in terms of crosspathing, so we’ve added crosspath benefits to Cleansing Foam [...]
— Update notes

”

•  Overall cost reduced by $150 (due to cost changes for previous tiers)

0-3-1, 0-3-2

•  Foam attack: Pierce with Oversized Nails increased ― 10 → 15

Version 23.0

1-3-0, 2-3-0

•  Deconstruction now grants all Sentries +1 damage to Fortified or MOAB
  • Note: Does not apply +2 damage to Fortified MOABs

Version 29.0

“

we have also re-envisioned the ‘Larger Service’ crosspath as giving smarter service as well in the form for targeting for Bloontrap & Cleansing Foam
— Update notes

”

•  Overall cost reduced by $50 (due to cost changes for previous tiers)
•  Foam attack: Manual targeting option added
•  Foam attack: Default targeting changed ― Normal (track) → Close (track)

Version 30.0

• Foam attack: Now counts damage when popping Lead Bloon layers (bug fix)

Version 31.0

“

Cleansing Foam has had some extra crosspath utility added at the cost of a small price increase
— Update notes

”

•  Upgrade cost increased ― $800 → $850

0-3-2

•  Pin now allows foam to slow Bloons by 50% for 2 seconds
  • Note: Due to a bug, this affects all MOAB-Class Bloons, including bosses

1-3-0, 2-3-0

•  Cleansing Foam now causes Sentry projectiles to remove Camo and Regrow properties

Version 31.1

“

032 Engineer Cleansing Foam now works correctly on all MOAB Class targets - hope you enjoyed that temporary treat
— Update notes

”

0-3-2

•  Pin no longer allows foam to slow MOAB-Class Bloons (including BADs and Boss Bloons) (bug fix)

Version 32.0

0-3-2

•  Foam: Slowing effect from Pin now stacks on the same target if applied multiple times (bug)

Version 32.1

0-3-2

•  Foam slow effect no longer stacks on a single target (bug fix)

Version 33.0

“

The MOAB offense of top path lacks for a mainly dps tower that is quite complex to use [...] the 320 crosspath will now be able to double dip on the Fortified & MOAB damage bonuses that it gains. Cleansing Foam is only seeing a slight tweak to help it be more viable if you want to attempt it as 'main camo detection’, and this mainly fixes some issues in ABR games allowing it to catch quick initial camo spawns.
— Update notes

”

•  Now gains a 4× attack speed buff for 1 second at the start of each round

1-3-0, 2-3-0

•  Sentry: Deconstruction's bonus damage to MOAB-Class Bloons and Fortified Bloons are no longer mutually exclusive

Version 43.0

“

While better than many options, base Engineer still takes a lot of available starting cash so the cost is reduced slightly and being moved back up into Cleansing Foam & Bloontrap [...]
— Update notes

”

•  Upgrade cost increased ― $850 → $900
  •  Overall cost is unchanged (due to cost changes for previous tiers)

Version 48.0

“

Really only one major change here; a rebalancing to how the 2xx Crosspath applies across various engineer upgrades, and some base stats being changed to accommodate fitting this.
— Update notes

”

2-3-0

•  Faster Engineering reduces the foam attack's cooldown more ― -40% → -50%

Gallery

For more Engineer Monkey images, see Gallery:Engineer Monkey.

Screenshots

This article or section needs more screenshots. See the screenshot guidelines for more information on what screenshots are needed and how to add them. The editor that added this notice elaborates: Redo the gifs without cosmetics

• 
  Cleansing Foam with no crosspath
• 
  Cleansing Foam with 130 crosspath
• 
  Cleansing Foam with 230 crosspath
• 
  Cleansing Foam with 031 crosspath
• 
  Cleansing Foam with 032 crosspath
• 
  Foam appearance
• 
  Foam with Vampire Hunter cosmetic
• 
  Cleansing Foam popping lead and removing camo and regrow properties
• 
  032 Cleansing Foam slowing down bloons
• 
  130 Cleansing Foam's sentries removing camo and regrow properties with camo detection

Assets

• 
  Portrait
• 
  Upgrade icon
• 
  Insta Monkey icon

In other languages

Language	Name / Description	Notes
Arabic	رغوة التنظيف رش الرغوة يؤدي إلى التخلص من البالونات المموهة والقابلة لإعادة النمو وفرقعة بالونات الرصاص.	—
Danish	Rensende Skum Sprøjter skum som fjerner kamuflage samt regenerering, og springer bly-bloons.	—
German	Reinigungsschaum Sprüht einen Schaum, der Tarnung und Runderneuerungen von Bloons entfernt und Blei-Bloons zum Platzen bringt.	—
Spanish	Espuma limpiadora Rocía espuma que quita el camuflaje y la regeneración y explota a los bloons emplomados.	—
Spanish (LA)	Espuma limpiadora Rocía espuma que quita el camuflaje y la regeneración y explota a los bloons emplomados.	—
Finnish	Puhdistusvaahto Suihkuttaa vaahtoa, joka poistaa maastokuvioinnin ja regeneraation sekä poksauttaa lyijyblooneja.	—
French	Mousse nettoyante Pulvérise de la mousse qui supprime le camouflage et le regonflage, et fait éclater les Bloons en plomb.	—
Italian	Schiuma detergente Spruzza una schiuma in grado di rimuovere mimetizzazione e rigenerazione e di far scoppiare i bloon di piombo.	—
Japanese	クレンジング剤 カモフラージュと再増殖型を除去するアワを噴射し、鉛のブルーンを割る。	—
Korean	크린싱 폼 캐모와 재생 속성을 제거하는 거품을 뿌리고 납 풍선을 터트립니다.	—
Dutch	Reinigend schuim Sproeit schuim dat camouflage en hergroei verwijdert en Loden Bloons knalt.	—
Norwegian	Renseskum Sprayer skum som fjerner kamuflasje og gjenvekst og popper bly-bloons.	—
Polish	Pianka czyszcząca Rozpyla piankę, która usuwa kamuflaż i odrastanie oraz przekłuwa ołowiane blony.	—
Portuguese (Brazil)	Espuma de Limpeza Lança espuma que remove Camuflagem e Regeneração, e estoura Bloons de Chumbo.	—
Russian	Очищающая пена Распыляет пену, смывающую камуфляж, мешающую восстановлению и протравливающую свинец.	—
Swedish	Rengöringsskum Sprejar skum som tar bort Kamo och Återväxt och smäller Blybloons.	—
Thai	โฟมชะล้าง พ่นโฟมที่ลบสถานะพรางตัวและฟื้นฟูออกไป พร้อมทำลายบลูนตะกั่ว	—
Turkish	Temizleyici Köpük Kamuflajı ve Yeniden Şişmeyi kaldıran bir köpük püskürtür ve Kurşun Bloon’ları patlatır.	—
Chinese (simplified)	洁面泡沫 喷射泡沫，清除迷彩气球和重生气球，并可击破铅气球。	—
Chinese (traditional)	清潔泡沫 噴霧泡沫，阻止偽裝和重生，並擊破鉛氣球。	—
This list was last updated for: version 43.1