diff --git a/homeassistant/components/foobot/sensor.py b/homeassistant/components/foobot/sensor.py
index 6b651984d233..a98ca998b5f4 100644
--- a/homeassistant/components/foobot/sensor.py
+++ b/homeassistant/components/foobot/sensor.py
@@ -16,12 +16,10 @@ from homeassistant.components.sensor import (
 )
 from homeassistant.const import (
     ATTR_TEMPERATURE,
-    CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
-    CONCENTRATION_PARTS_PER_BILLION,
-    CONCENTRATION_PARTS_PER_MILLION,
     CONF_TOKEN,
     CONF_USERNAME,
-    PERCENTAGE,
+    UnitOfDensity,
+    UnitOfRatio,
     UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant
@@ -44,7 +42,7 @@ SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
     SensorEntityDescription(
         key="pm",
         name=ATTR_PM2_5,
-        native_unit_of_measurement=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        native_unit_of_measurement=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
         icon="mdi:cloud",
     ),
     SensorEntityDescription(
@@ -56,25 +54,25 @@ SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
     SensorEntityDescription(
         key="hum",
         name=ATTR_HUMIDITY,
-        native_unit_of_measurement=PERCENTAGE,
+        native_unit_of_measurement=UnitOfRatio.PERCENTAGE,
         icon="mdi:water-percent",
     ),
     SensorEntityDescription(
         key="co2",
         name=ATTR_CARBON_DIOXIDE,
-        native_unit_of_measurement=CONCENTRATION_PARTS_PER_MILLION,
+        native_unit_of_measurement=UnitOfRatio.PARTS_PER_MILLION,
         icon="mdi:molecule-co2",
     ),
     SensorEntityDescription(
         key="voc",
         name=ATTR_VOLATILE_ORGANIC_COMPOUNDS,
-        native_unit_of_measurement=CONCENTRATION_PARTS_PER_BILLION,
+        native_unit_of_measurement=UnitOfRatio.PARTS_PER_BILLION,
         icon="mdi:cloud",
     ),
     SensorEntityDescription(
         key="allpollu",
         name=ATTR_FOOBOT_INDEX,
-        native_unit_of_measurement=PERCENTAGE,
+        native_unit_of_measurement=UnitOfRatio.PERCENTAGE,
         icon="mdi:percent",
     ),
 )