The Compendium of Caraka 6.23.201

6.23.201

kṣīraśuklā nataṃ kuṣṭhaṃ pāṭalodīcyasārivāḥ/
śelusvarasapiṣṭo 'ayaṃ lūtānāṃ sārvakārmikaḥ//

kṣīraśuklā, nata, kuṣṭha, pāṭalā, udīcya, and sārivā / ground with the fresh juice of śelu is effective for all purposes against spiders;