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

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Cleansing Foam is the Engineer Monkey's path 2 tier 3 upgrade in Bloons TD 6. It grants the Engineer Monkey an additional foam attack which targets somewhere within the Engineer Monkey's range, and continuously sprays its target with foam. The foam attack's speed is quadrupled for 1s at the start of every round. Bloons which 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.

Mechanics

This article is in need of research. You can help out by editing this article or discussing your findings on the talk page. The editor who added this notice elaborates: Foam and sentry deploy rate have increased speed at the start of the round. Does this also apply to the nail gun?

The Engineer Monkey's foam attack has a cooldown of 2s, which is reduced to 1s 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 0.5x for 1 second. Foam has a lifespan of 8.5s. Foam can be targeted anywhere within the Engineer Monkey's range, including over obstacles and off the track.

Foam deals no damage to Bloons except Lead Bloons. When a Lead Bloon touches foam, its outer layer will pop instantly even if 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 4x 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. 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	$1,570	$1,850	$2,000	$2,220	$1,099	$1,295	$1,400	$1,554
1-3-0	$1,995	$2,350	$2,540	$2,820	$1,397	$1,645	$1,778	$1,974
2-3-0	$2,335	$2,750	$2,970	$3,300	$1,635	$1,925	$2,079	$2,310
0-3-1	$1,950	$2,300	$2,485	$2,760	$1,365	$1,610	$1,740	$1,932
0-3-2	$2,135	$2,520	$2,720	$3,025	$1,495	$1,764	$1,904	$2,118

Strategy

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. 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 choice of crosspath is situational. If foam is only used to help with early Camo detection, it does not need a crosspath at all. If some additional damage, attack speed, and reliable Regrow removal is desired, it should take the top crosspath, shooting foam quicker and producing sentries. On the other hand if additional pierce and slowdown is preferable, it should take the bottom crosspath.

The increased attack speed at the start of rounds helps it get some foam down before the Bloons arrive, but this counts as a buff and can be absorbed by Lych.

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 crosspath now increases Sentry range by +4

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 & MOAB

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

Version 30.0

• Foam attack: Now counts damage when popping Lead Bloons (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 crosspath allows Cleansing Foam to slow Bloons by 50% for 2 seconds
•  Pin crosspath allows Cleansing Foam to slow all MOAB-class (including BADs) by 50% for 2 seconds (bug)

1-3-0, 2-3-0

•  Foam makes Sentries shoot Foamy nails that strip 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

•  Cleansing Foam: no longer slows MOAB-class bloons (including BADs) with Pin crosspath (bug fix)

Version 32.0

0-3-2

•  Cleansing Foam slow stacks on a single target (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

”

•  All attacks: Now gains 1s of 4x rate on round start

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

”

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.

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