Spores are disinfected by -
Ananthanarayan & Panicker's Textbook of Microbiology 9th edition pg no:34 Formaldehyde is active against the amino group in a protein molecule. In aqueous solution, it is markedly bactericidal and sporicidal and also has a lethal effect on viruses
Ethylene oxide
Betapropiolactone
Formaldehyde
Hexachlorophen
general microbiology