Correct

四害

/ sìhài / 
Strokes

Definition

"the four pests", i.e. rats, flies, mosquitoes, and sparrows/see also 打麻雀运动[dǎ má què yùn dòng]

Example

As a Noun

the four pests ［rats, bedbugs, flies, and mosquitoes］

1
Miè
灭
sìhài
四害

wipe out the four pests