A healthy animal kept in proper husbandry that hasn't been under immense amounts of stress will often remain unaffected by parasite issues.. after all.. parasites are not designed to kill their hosts. Lost and misplaced parasites (Those who took a wrong turn in their life cycle.. like heartworms in dogs) can cause problems however, I'm a firm believer in the "Treat with Heat" method as a reptile's immune system is very heat dependant. Many lizards and snakes realize when they feel ill and find a very warm area with a high heat gradient somewhere... and curl up for a few hours until their core body temperature reaches an optimum level to allow their immune systems to overtake the invading organism. This is a documented fact in reptiles, especially in monitors, bearded dragons and many species of african agamids. Leopard geckos are no different as long as they also have the choice to move away from a high heat area... All parasites and bacteria have a specific temperature at which they cease to function and die.. Exposed to this for a few minutes (Like the Japanese Giant Wasp being killed by the Japanese honeybees who can tolerate temperatures of 119 degrees F where their enemy the giant wasp can only tolerate about 115 degrees F.) their bodies become basically an oven which kills the parasites and other organisms. A reptile's second advantage is the ability to cool down quickly without risking immune system or organ damage...Cooling down quickly is the ket to the entire system.. they can stay at temps high enough to kill invading organisms and then cool down within minutes to normal operating temps once their high heat treatment has done its job. As such, with a properly done environment, and available heat sinks with high heat availability.. (We are talking desert animals here..and rocks after sundown in the desert can still be scorching hot) parasites in captive animals should never be a problem unless there's an underlying stress or other disease going on within the reptile's body. Which can also normally be avoided by proper heat availability. All of my belly heat surfaces for my leos can sometimes feel hot to me.. but they use these surfaces heavily at times of gestating eggs, digesting larger meals and whenever else they may be feeling under the weather so to speak which isn't often. I've yet to experience any burns on any of my animals from this treatment either. As a matter of fact.. high heat has saved many of my rescues that I take in...from an array of infections brought about by injury or improper care. I dislike the use of antibiotics in reptiles because long term effects of some still aren't known and most were developed for human or mammalian animal use.. not reptiles. With the difference in their metabolism.. you never know what a medication may do to a specific animal and how it may compromise their systems in the future...I've yet to be failed in 10 years of using this method to treat any problems that crop up in my collection.

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Lucien
1.1 Columbian Redtail Boa (BCI)(Sutekh and Isis)
5.11.Leopard geckos (1.2 Blizzards (Caine, Phoenix, and Mirage), 0.2 Tangerine Albinos (Tequila Sunrise ...Tiki for short, and Casper), 1.0 Tremper Albino (Mycah), 0.3 Poss. Het. Albino (Annika, Lace, and Aris), 1.1 dbl. het blizzard x tang albino (Malice, Malfeas), 1.0 Full Stripe Chocolate Tremper Albino (Discord), 0.1 pastel (Raven) and 1.2 Normals)
0.1 Savannah Monitor (Kiros) (R.I.P. November 18, 2005)
13 rats (plus pups)
2 Dogs (Loki and Storm)
2 cats (Ashe and Hercules)