Amphibian — breeding (owner-practical care, Merck Veterinary Manual pet-owner)
Source: first-hand Merck Veterinary Manual pet-owner text, saved to source_file; every claim below is a C1 byte-substring of it.
Claims
Untreated hardwood mulches and leaf litter are options, but cedar and pine should be avoided because they contain toxic oils.To decrease pests, heat soil to 200°F (93°C) for 30 minutes or freeze below 32°F (0°C).Not all plants are safe for amphibians, so pet owners should check with an experienced amphibian owner, breeder, or vet before adding plants.Not all “full-spectrum” light bulbs (bulbs that mimic sunlight) provide the right UVB levels, so pet owners should ask a knowledgeable vet or breeder which type of bulb to use.
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Source: pdf-raw/owner-care/merck_amphibian.txt · https://www.merckvetmanual.com/all-other-pets